The distribution, quantity and protection of some rare animals and plants in China are given 1. Protecting Wildlife Resources China has a vast territory, complex terrain, diverse climate and abundant wildlife resources. For example, there are over 30,000 kinds of higher plants and over 7,000 kinds of woody plants in China. There are more than 800 species of terrestrial vertebrates/kloc-0, including more than 300 species of reptiles, more than 400 species of birds100 and mammals, accounting for 10% of terrestrial vertebrates in the world. There are nearly 600 species of freshwater fish and more than 500 species of marine fish/kloc-0, accounting for about 10% of the world's fish species. In addition, there are many rare animals and plants unique to the world, such as giant panda, golden monkey, Chinese alligator and baiji, and ginkgo, Metasequoia and Davidia involucrata in plants. Due to our lack of understanding of the rational utilization of wildlife resources in the past, our precious resources in this area have been seriously damaged. There are nearly 10 species of birds and animals that are basically extinct because of indiscriminate catching and killing, such as wild horses, high-nosed antelopes, white-rumped langurs, white cranes, yellow-bellied pheasants and so on. Gibbons, deer, tigers, baiji, dugong, crocodiles and elephants are also endangered. The sources of many precious medicinal materials have also dried up due to unplanned collection. The extinction of wild animals is also a common international problem. According to the statistics recorded in the past two thousand years, more than one species of mammals 1 10 and more than one species of birds 130 have disappeared from the earth. At present, there are more than 2,500 species of plants and 1000 species of vertebrates on the verge of extinction in the world. (1) Giant panda: also known as panda. Mammals. Fat, bear-shaped, about 1.5 meters long and about 66 cm high at the shoulder. Eyes, ears, front and rear limbs and shoulders are black, and the rest are white. Living in a bamboo forest at an altitude of 2000-4000 meters, I like to eat bamboo and sometimes eat small animals. Good at climbing trees, sexually lonely and unsociable. Only produced in a few places in Sichuan, Shaanxi and Gansu. It is a rare animal unique to China, and it is a national first-class protected animal. (2) Zhu: birds. The male is nearly 80 cm long and the female is slightly smaller. Feathers are mostly white, some are pink, and there are some long drooping willow feathers on the neck. The forehead, eyes, the top of the head, the bottom of the mouth, tarsal bones and bare calves are red. Living near swamps and mountain streams, perching on tall trees, eating crabs, frogs, small fish, snails and beetles. A class of protected animals in China. (3) Golden monkey: also known as snub-nosed monkey. Mammals. The body length is about 70 cm and the tail length is equal to or longer than the body length. There is shiny long hair on the back, and the hair on both sides of the face, chest and hind legs is red. Living in the alpine forest at an altitude of 2500-3000 meters, living in groups and feeding on wild fruits, buds and bamboo shoots. Distributed in Sichuan, Gansu and southwestern Shaanxi. A class of protected animals in China. (4) White-headed langur: mammal. It is about 50 cm long, with a small head, a long tail and slender limbs. The head is white with a crown, and the hair on the back of the body is longer and denser than the hair on the abdomen. Living in tropical and subtropical broad-leaved forests, living in social trees, rarely going to the ground, eating wild fruits, leaves and flowers. Produced in Yunnan, southwestern Guangxi and northern Vietnam. A class of protected animals in China. (There are also langurs, which are also a kind of animal protection. ) (5) takin: also known as pronghorn. Mammals. Length 1.7m ~ 2.2m, shoulder height 1m ~ 1.3m, and the maximum weight is 350kg. The tail is short and both sexes have short horns. The whole body is brown or dark brown and the eyes are black. They usually live at an altitude of 3,000-4,000 meters, and go out for food at night, eating grass, branches and bamboo shoots. Distributed in China, Sichuan, Yunnan, Shaanxi, Gansu and other places. A class of protected animals in China. (6) baiji: also known as baiji. Mammals. Body length 1.5m ~ 2.5m, round head and long mouth, about 30cm. The back is light blue-gray, the abdomen is white, and the fins are white. Living in the middle and lower reaches of the Yangtze River in China, Dongting Lake and Qiantang River. China endemic animals, national first-class protected animals. (7) Black-necked crane: birds. Large wading bird, about1.4m long. The head, neck and flight feathers are all black, the tail feathers are also black, the body feathers are gray, and the appearance is black and white, which is easy to identify. They mainly inhabit swamps with high aquatic plants, feed on fish, frogs, snails and shrimps, breed in alpine swamps with an altitude of 3,500 m to 5,000 m in Qinghai and western Sichuan, and migrate to Sichuan, Guizhou and Yunnan for the winter. The only alpine species among cranes is a class of protected animals in China. (8) Chinese alligator: reptile. It is more than 2 meters long and has 6 rows of horny scales on its back. The back is dark brown with yellow spots and yellow stripes; The ventral surface is gray with yellow spots and stripes; There is a gray-black ring on the tail. Five fingers on the forelimb, no webbed; The hind limbs have four fingers and webbed. They dig holes in ponds and swamps, feed on fish, frogs, birds and mice, and live in caves in winter. Distributed in Anhui, Jiangsu, Zhejiang and Jiangxi. Endemic to China, a kind of protected animals. 3. Some rare plants in China (1) argyrophylla: evergreen trees, 20 meters high. Branches are parallel and branchlets are hairy. Two kinds of leaves, the leaves on the long branches are scattered radially, 4 cm ~ 5 cm long; Impeller on the short branch, 2.5 cm long, linear, with white pores at the lower part. Cones are produced in Guangxi, Sichuan, Hunan, Guizhou and other places. Found in 1956, it is a precious tree species unique to China. (2) Metasequoia glyptostroboides: deciduous trees, with a height of 35 meters and a DBH of 2.5 meters. The lateral branches are opposite and pinnate. The leaves are strip-shaped, flat, and 1.3 mm ~ 20 mm long, alternately paired to form two rows, which are pinnate. The cone is drooping, nearly quadrangular spherical or short cylindrical, about 18 mm ~ 25 mm long. Produced in Sichuan, Hubei and Hunan. Found in 194 1 year, it is a rare tree species unique to China. (3) Davidia involucrata: also known as water pear. Deciduous trees, 15m ~ 20m high. The leaves are broadly ovate, the apex is acuminate, the base is heart-shaped, and the edges are serrated. Spherical head with two ivory bracts at the base, oblong or oval, about 7 cm long and 3 cm ~ 5 cm wide. Endemic to China, distributed in Sichuan, Guizhou and Yunnan. When flowering, white bracts cover the treetops, just like a flock of pigeons, so it is also called "China pigeon tree". World famous ornamental plants. (4) Ginseng: a perennial herb. 30 cm to 60 cm high. Spindle-shaped or cylindrical fleshy roots, short stems, palmately compound leaves, three to six rounds. Flowers are small, yellow-green, umbels. Fruit oblate, red. Produced in northeast China, Korea and other places, with excellent medicinal value. It is one of the "Three Treasures of Kanto". In order to protect nature and natural resources, especially rare animal and plant resources, protect the natural environment and represent the ecosystems of different natural regions, the state has designated certain protected areas, which are called nature reserves. China has designated more than 400 nature reserves, of which 10 is mainly for the protection of giant pandas. 1After May 1983, bamboos in Laishan, Minshan and Qinling successively bloomed and died, which seriously threatened the survival of giant pandas. The State Council has allocated special funds to rescue giant pandas and instructed relevant provinces to do a good job in protection. The Ministry of Forestry and Sichuan, Shaanxi, Gansu and other provinces have successively set up leading groups to rescue giant pandas and organized 52 patrol observation groups. The state has also established some giant panda farms to house and raise the affected giant pandas. The establishment of nature reserves not only protects and develops precious animal and plant resources, but also studies the ecological and biological characteristics of rare animals and plants by using nature reserves, providing scientific basis for introduction and domestication, and providing provenances for mass propagation and cultivation of new varieties. Because the nature reserve preserves the complete natural environment and ecosystem, it is of great value for people to study natural resources, natural history, natural conditions, the relationship between living and non-living things and environmental protection monitoring activities. It is an important base for people to further explore and deeply understand the laws of nature.
Physiological habits of dogs
Dogs are carnivores. Animal protein and fat should be prepared when feeding, supplemented by vegetarian ingredients to ensure the normal development and health of dogs.
② The digestive tract of dogs is shorter than that of herbivores, and the content of hydrochloric acid in dogs' stomachs ranks first among domestic animals. In addition, the intestinal wall thickness has strong absorption capacity and is easy to digest, which is suitable for digesting meat food.
Dogs belong to the wolf clan, and they don't chew very much, which can be described as "wolfing down". If you want to feed coarse fiber vegetables, you'd better chop them up or cook them.
④ The dog's defecation center is not developed enough to defecate on the move, so we should give it a certain defecation time.
Dogs like to bite. This is also the habit of biting prey in the original ecology. Give it some bones from time to time when you feed it, which is good for grinding your teeth.
Dogs have unique self-defense ability. After eating toxic food, they will cause vomiting reaction and spit out toxic food.
⑦ In hot summer, the dog's mouth is wide open and its tongue is very long, and it relies on the evaporation of water in saliva to dissipate heat.
When dogs live in groups, there is also a "hierarchy" and a master-slave relationship. Establishing such an order can maintain the stability of the group and reduce the struggle caused by the struggle for food and living space.
Pet-name ruby when lying down, the dog will always turn around, perhaps to lie down comfortably, perhaps because of some instinct left over.
Attending the dog's head, neck and body, like to be caressed, but can't touch the ass and tail.
In addition, "dogs can't change their habits" is the biggest bad habit of dogs and must be corrected. Dogs not only eat human shit, but also eat shit.
Behavior standards and habits of dogs
The dog's code of conduct for strangers is to judge the strength of his opponent according to the height of his sight. When a stranger approaches, the oppressive feeling of coming down from above will make him uneasy. If you keep a low profile, he will accept you. If it is lower than the height seen by its eyes, it will make it feel more secure.
The dog's weakness is on the right, and it will make actions to protect the right. When it is cornered, it will lean its right side against the wall and its left side will face the enemy. This habit is a dog's innate instinct.
The dog shows its belly to others as a sign of obedience and surrender. Dog society also has certain rules, and it will never attack opponents who fall and show their bellies. When a dog sleeps with its stomach down, it shows that it is very relieved or trusting, so that people can see or touch its stomach.
Dogs like people more than their peers, not only because people can take care of them and give them food and shelter. The main reason is that dogs keep company with people and build feelings. Dogs have a strong sense of protection for their owners. Some dogs rescue children from water, burning houses or under cars. A dog will help its dog friend who is in pain or injured.
Dogs have territorial habits, that is, they occupy a certain range and protect them from other animals. They use anal gland secretion to make feces have a special smell, sweat secreted by sweat glands between toes and pictures of scratching on the ground with hind legs as territorial markers.
Dogs are very jealous. When you notice the new dog and neglect to take care of it, it will get angry, disobey its habit and become irritable and destructive.
Dogs also have vanity and like to be praised. When it does a good thing, or does some tricks, you clap your hands to praise it and touch it, and it will be as satisfied as a full meal. Dogs are also shy. If they do something wrong, or if their hair is cut too short, they will hide somewhere and wait for hunger.
As far as memory is concerned, dogs never seem to forget the voices of people they have been close to, and they can also remember the places where they have lived. However, some people think that dogs rely on sensory sensitivity to recognize the voices of acquaintances and know the location.
Dogs like to smell anything. Smell territorial marks, new dogs, food, poison, feces, urine and so on. When the dog is wandering outside, we often see it constantly urinating or squatting down and scattering feces on the road. And it walks by these "smelly marks".
Dogs like to chase animals. Like hunting small animals. Chase rabbits, cats, sheep, etc. Even chasing humans, people use this characteristic of dogs to drive away cattle and sheep and protect themselves.
When a dog is sick, it will instinctively avoid humans or other dogs and hide in the dark to recuperate or die. This is an "atavism". The ancestors of dogs lived in groups. If any dog in the group is sick or injured, other dogs will kill it to avoid all the trouble or pain after falling behind. This should attract the attention of dog owners or breeders and should be treated by veterinarians in time.
Dogs like alcohol the least. When giving injections to dogs in the veterinary hospital, behave yourself first, and then rub alcohol. As soon as the dog smells alcohol, its hair immediately stands up and growls.
Dogs are afraid of fire, so they don't like anything that smokes, such as lighting matches and smoking.
Living habits of chickens:
1, poor cold resistance. The temperature of newly hatched chicks is 3℃ lower than that of adult chicks, and it takes 10 days to reach the normal temperature. In addition, chicks' villi are short and thin, so they can't keep out the cold, so their adaptability to the environment is not strong, and they must rely on artificial heat preservation to grow and develop normally. 1-30-day-old chickens should be kept warm and placed in a clean and hygienic environment. Chickens over 30 days old are basically full of feathers and can keep warm.
2. High body temperature and rapid development. Generally, the body temperature of chickens is between 40.8-4 1.5℃, so they must be raised in a well-ventilated environment, which is warm in winter and cool in summer. In addition, chicken has short digestive tract, vigorous metabolism and rapid growth and development, so it must be fed with nutritious and digestible feed to meet the needs.
3. Weak resistance. Chickens, in particular, are vulnerable to harmful microorganisms. Therefore, in addition to cleaning the environment, we must also take precautions. For example, outsiders are strictly prohibited from entering and leaving the henhouse, the environment and cages should be disinfected, and all kinds of chickens should be injected with various vaccines regularly.
4, easy to be surprised. Chickens are timid, especially chicks, and are easily frightened. Light people are crowded and their growth and development are blocked, while heavy people trample on each other, resulting in disability and death. So chickens should be kept in quiet places. Rough management, sudden noise, the intrusion and capture of cats and dogs will all lead to riots and affect the growth of chickens.
5, afraid of humidity. Chickens should grow in a dry and ventilated environment. If the environment is humid, some pathogenic bacteria and molds can easily grow and reproduce. If the henhouse is wet, the chicken manure will ferment to produce toxic gas, which makes the chicken easy to get sick.
Chinese alligator is a unique crocodile in China and one of the endangered reptiles in the world. Its body is about 1.5-2 meters long, which is not as huge as African crocodiles and Thai crocodiles. The Chinese alligator has a short and blunt kiss, which is a kind of alligator. Because the Chinese alligator looks like a dragon, it is commonly called "earth dragon" or "pig female dragon". In 1970s, it was taken abroad and traveled around Europe, and became famous all over the world.
Crocodiles and giant dinosaurs once flourished in Mesozoic and dominated the world. However, after 70 million years of extinction, the arrogant dinosaurs became extinct, and the Chinese alligator became one of the few reptiles that survived. Why can the Chinese alligator miraculously survive? This problem has aroused great interest and concern of biologists. Chinese alligator has high scientific research value.
Some people call the Chinese alligator a crocodile and treat it as an aquatic animal such as fish. In fact, Chinese alligators have no gills and are not aquatic animals. It's just that the Chinese alligator has returned to the water, formed some characteristics to adapt to life in the water, and has the amphibious ability. In this way, the Chinese alligator has expanded its life field and easily became the winner in struggle for existence.
Chinese alligators like to inhabit lakes, marshy beaches or hilly mountains and streams in wet areas full of weeds and absinthe. It has superb ability to dig holes in buildings. Its head, tail, pointed toes and claws are the tools for digging holes in buildings. As the saying goes, "There are three caves for cunning rabbits", but there are more than three caves for Chinese alligators. There are often several holes in its caves, some are overgrown with reeds and bamboo forests on the beach, some are at the bottom of the pond, there are entrances and exits and vents on the ground, and there are also side holes adapted to various water levels. The cave twists and turns, criss-crossing, like an underground maze. Perhaps it was this underground maze that helped them survive the cold ice age and the cold winter, and also helped them escape from the enemy and survive.
Chinese alligators are quiet. They often live in caves during the day and go out for food at night. However, it also comes out during the day, and especially likes sunbathing on the shore and beach near the cave. It often closes its eyes, crawls motionless, and is in a state of semi-sleep, giving people the illusion of being slow. However, once it encounters the enemy's injury or finds food, it will immediately swing its thick tail from side to side and quickly sink to the bottom of the water to avoid the enemy's injury or chase food. Its favorite foods are snails, mussels, small fish, shrimps, waterfowl, rabbits, water snakes and other animals. Chinese alligator eats a lot and can store a lot of absorbed nutrients in its body, so it has strong hunger tolerance and can spend a long hibernation period.
The descendants of Chinese alligators once flourished. Seventy or eighty years ago, there were many Chinese alligators living on the floodplain of Wanchunxu in Wuhu, Anhui Province. According to some old people's memories, 1949 it is difficult to hear the roar of the Chinese alligator there. Now, the distribution area of Chinese alligator is shrinking, and the number is also decreasing. What caused this?
Analysis, mainly the destruction of habitat environment. In addition, the Chinese alligator is full of treasures, its meat used to be delicious at banquets, and its skin is a good material for making high-grade leather products, which also has high medicinal value, so it has been hunted and killed by people. Because the Chinese alligator is a carnivore, it will dig holes in the dam, so farmers once regarded it as a pest and killed it when they saw it. Chinese alligators are almost extinct.
For this reason, the China government listed the Chinese alligator as a national first-class protected animal in 1972, and the 1973 Convention on International Trade in Endangered Wild Fauna and Flora listed it as a key protected animal, and the trade was prohibited. 198 1 year, according to experts' estimation, there are only 300-500 Chinese alligators living in the wild at present, and this species may become extinct in1year. Happily, however, the Chinese alligator is not extinct, but its number has greatly increased. How was this miracle created?
In order to protect the Chinese alligator, change its endangered status and make it survive and develop for generations, the China Municipal Government has invested huge material and human resources to establish the Anhui National Nature Reserve and the Chinese alligator Breeding Research Center.
However, the general trend of the extinction of Chinese alligator can not be saved by its own reproduction. Since 1970s, scientists in China have embarked on a bumpy journey of artificial breeding of alligators. At present, China's technology of artificially incubating crocodile eggs and artificially raising crocodiles has been at the forefront of the world. Thanks to their unremitting efforts, the number of Chinese alligators has increased from 170 in the early days of the farm construction to more than 4,000 now, and the annual breeding number exceeds 1000. Chinese alligator became the first endangered animal approved by international trade conventions for commercial development and utilization.
Crucian carp is an omnivorous fish, but the adult fish is mainly plant food. Because plant feed is rich in water, there are many kinds of edible plants. The stems, leaves, buds and fruits of vascular plants are the favorite foods of crucian carp, and crucian carp can obtain various rich nutrients in the waters where higher aquatic plants such as water chestnut and lotus root grow. Diatoms and some algae are also the food of crucian carp. They also like shrimp, earthworms, young snails and insects.
The feeding time of crucian carp varies with seasons. Spring is the peak season for feeding, feeding day and night; The feeding time in summer is morning, evening and evening; Feeding all day in autumn; In winter, they eat at about noon.
Carassius auratus living in rivers and flowing water likes to walk in groups. Sometimes with the water, sometimes against the water, they feed and lay eggs in shoals, bends, ditches and reeds rich in aquatic plants; When the current is slow or static and the bait is sufficient, they will temporarily settle down.
Crucian carp living in lakes and large reservoirs also choose to eat and live. Especially shallow water aquatic plants, are the places where they are concentrated. Even in winter, they like grass roots, and most of them don't swim in the deep water without grass for the winter.
Crucian carp, living in a small river pond, swims when it meets the current, stops when it meets the current and chooses to eat. In winter, I often dive into deep water for the winter.
Frog has four toes on its front foot, five toes on its back foot and webbed feet. There are two slightly bulging bags on both sides of frog's head. That's its eardrum. Frogs can hear sounds through it. Frog's back is green, smooth and soft, with patterns, and its abdomen is white. You can hide it in the grass, which makes it easier to catch pests and protect yourself. Its skin can also help it breathe. Its airbag is only available to male frogs. Frogs hunt with their tongues, which contain mucus. Frogs are eggs, which hatch into tadpoles and finally become frogs.
Frog's body is divided into trunk and limbs, and its skin is smooth.
Sports predation is: swimming, jumping and hunting with the tongue.
Reproductive development is: spawning, developmental metamorphosis.
Its living environment is: when I was a child, I could only live in water, and when I grew up, I could live on land.
Frogs breathe with their lungs, but they can also draw oxygen from the air through wet skin. Various pigment cells in its skin will also expand or contract with the change of humidity and temperature, thus changing the depth of skin color. Frogs usually inhabit rice fields, ponds, ditches or grass by the river, and sometimes they lurk in the water. Usually they hunt at night.
Observation on Life Habits of Bufo gargarizans
Chinese toad is a common animal-toad, belonging to Amphibia, Anura and Bufonidae. Because of his ugliness, he got such a popular and ugly name
During the day, toads hide in dark and humid places and seldom move. At night, you can see them busy "hunting" and catching grass insects by the pond.
Toads are generally above 10 cm. Its body is "thick" and its skin is unusually "rough", but its yellowish belly is still smooth. Yellow, brown and green are interlaced, with protrusions on the back. These "protrusions" are "treasures"-skin glands, especially the largest pair of protrusions above the eardrums on both sides of the head-which can secrete white venom. This venom is a defensive weapon. When a natural enemy attacks, the venom emitted by the toad can keep the other person away. Toad has a trapezoidal head with a small front end, which looks silly. There are a pair of nasal cavities at the kissing end of the head, which can circulate air and have a sense of smell. There is a big protruding eye on each side above the head. It has upper and lower eyelids, and you can see a transparent film when you open the lower eyelid. Its eyelids can be closed, so it won't keep its eyes open like a fish. However, when the toad closes its eyes, it is not resting, but swallowing food. Because there is a thin film between its eyes and mouth, there is no hard bone, and the eyeball presses into the pharyngeal cavity, forcing food to swallow, so it is necessary to close your eyes. Toads also "cry". It has lacrimal glands. Toad's eyes have a wide field of vision and are extremely sensitive to moving objects. There is also an oval membrane eardrum behind each eye. The eardrum can transmit sound waves to the inner ear, so it has hearing. Unfortunately, toad is dumb (male and female) and can't "talk"-he can only croak. It has no male frog's "singing sac" and a flat mouth under its head. If you pry your mouth open, you can see that there is a hole in its chin that communicates with its nostrils. Its upper and lower jaws have no teeth, and its mouth has an oval Lickitung (frog's tongue is forked at the end), which is upside down. The root of the tongue is fixed at the front edge of the bottom of the mouth, and the tip of the tongue extends into the mouth. There is always a sticky liquid on the tongue. It can reach out quickly to catch food. Toad's head is attached to a short and wide trunk, with developed forelimbs and hind limbs. There is a web between the toes of the hind limbs, which is used for swimming. It is good at crawling, but not good at jumping.
Toads are good at catching pests in the wild, usually at night. There are many kinds of pests, such as butterflies, locusts, grasshoppers, scarabs, mosquitoes, flies and termites. The prey is very large. Frogs in rice fields prey on more than 200 kinds of pests a day, while toads are 2-3 times taller than frogs, so they are very beneficial to human beings.
There is another interesting phenomenon. Before and after the "vernal equinox" and "Tomb-Sweeping Day", hibernating toads concentrated in ponds and artificial lakes. Xiao Xiong toad can be seen hugging a big female toad with its forelimbs, and sometimes it won't be separated for days (even if it is difficult to separate it manually). This phenomenon is called hugging or hugging. Holding a pair is not to mate with them, but to urge two individuals to lay eggs and ejaculate at the same time for in vitro fertilization. Toad's eggs are striped. There is an outer colloid film on the outside of the egg, which plays a role in buffering, protecting, collecting heat and light, increasing buoyancy and preventing dryness.
Bufo bufo gargarizans are abundant and widely distributed, which can be widely used in scientific research and teaching and become good materials for anatomical and physiological experiments. For example, its gastrocnemius and sciatic nerve can be used to observe nerve conduction and muscle contraction.
The venom of toad skin gland can be processed into Venenum Bufonis, a traditional precious medicine in China. Venenum Bufonis is the main raw material of thousands of Chinese medicines such as Liushen Pill and Runhou Pill. It can be used for treating surgical diseases such as sores and ulcers, and also has the functions of detoxification, diuresis and heart strengthening. The well-known Angong Niuhuang Pill and the newly made tonics are both cardiotonic drugs for first aid.
Toads are very beneficial to human beings. On the basis of breeding, we should vigorously develop and utilize, and at the same time pay attention to protection. In the measures to protect toads, it is forbidden to catch and kill them indiscriminately and salvage their larvae-tadpoles; More importantly, it is necessary to protect their habitats, especially in the breeding season. Water pollution is the main cause of a large number of frogs. Practice has proved that low-concentration pesticides can stimulate tadpoles' muscles, make them move slowly, and are easy to be found and eliminated by natural enemies. High-dose pesticides can kill people immediately. The bigger tadpoles are, the more sensitive they are to pesticides, especially before and after metamorphosis. It can be seen that the urgent task is to greatly reduce the amount of pesticides and vigorously advocate biological control of pests. In addition, the breeding base of toads should be established to ensure their safe reproduction and growth.
Through this activity, I not only fully understand the life habits, morphology, structure and corresponding functions of toads, but also learn the methods of observing, writing observation diaries and dissecting toads personally. More importantly, I learned that toads not only prey on pests in farmland, woodland and vegetable fields, but also can be used as experimental materials and drugs. It costs neither labor nor money to control pests, and it does not pollute the environment.