The recyclable resources in life mainly include: (1) waste paper: newspapers, book paper, wrapping paper, office paper, advertising paper, cartons, etc. Note that paper towels and toilet paper are too water-soluble to be recycled.
(2) Plastics: all kinds of plastic bags, plastic foams, plastic packaging, disposable plastic lunch boxes and tableware, hard plastics, plastic toothbrushes, plastic cups, mineral water bottles, etc. (3) Glass: glass bottles and broken glass pieces, mirrors, light bulbs, thermos bottles, etc. (4) Metals: cans, tin cans, toothpaste skins, etc. (5) Cloth: mainly including waste clothes, tablecloths, towels, cloth bags, etc. If waste paper 1 ton is recycled, 850 kilograms of paper can be made, 300 kilograms of wood can be saved, and pollution can be reduced by 74% compared with the same output; Every 1 ton plastic beverage bottle can recover 0.7 tons of secondary raw materials; Every recovered 1 ton of scrap steel can produce 0.9 tons of steel, which saves 47% cost compared with ore smelting, reduces air pollution by 75%, and reduces water pollution and solid waste by 97%.
So far, the environmental problems that have threatened human survival and been recognized by human beings mainly include: global warming, ozone layer destruction, acid rain, fresh water crisis, energy shortage, sharp decline of forest resources, land desertification, accelerated extinction of species, garbage disaster, toxic chemical pollution and many other aspects. (1) Global warming refers to the increase of global temperature.
In recent 100 years, the global average temperature has experienced two fluctuations of cold-warm-cold-warm, which can always be regarded as an upward trend. Since 1980s, the global temperature has obviously increased.
198 1~ 1990, the global average temperature increased by 0.48℃ compared with 100 years ago. The main reason for global warming is that humans have used a lot of fossil fuels (such as coal and oil) in the past century.
2. Health tips
1. Wash your hands before and after meals: Hands are the "diplomatic organs" of the human body and play a leading role in all people's "foreign affairs activities", such as doing all kinds of work, taking out garbage, brushing spittoons, washing feet, wearing shoes and cleaning stools.
Therefore, hands are easily infected with many pathogenic microorganisms. Scientists have made such a survey that an unwashed hand contains at least 40,000 to 400,000 bacteria.
Nail seam is a good place for bacteria to hide. One nail seam can hide as many as 3.8 billion bacteria. In addition, someone did an experiment. Patients with acute dysentery use 5~8 layers of toilet paper, and Shigella can penetrate into their hands. Shigella can survive for 3 days in their hands.
The flu virus can survive for 7 days on wet and warm hands. So, my hands are dirty.
Moreover, when traveling, visiting and studying, and performing tasks, hands often touch some items and get dirty. In particular, patients with infectious diseases and people who look healthy but actually have viruses in their bodies often spread pathogenic microorganisms to various articles and appliances. When a healthy person touches his hand, pathogenic microorganisms will reach you.
If you don't wash your hands before and after meals, you will bring bacteria into your mouth and eat them in your stomach. This is what people often say: "Bacteria come from hands and diseases come from mouth." Therefore, it is necessary to develop the habit of cutting nails and washing hands frequently before meals, after defecation and after work.
Washing hands can remove bacteria and eggs attached to hands. Washing your hands with running water can remove 80% bacteria from your hands. If you wash your hands with soap first and then with running water, you can wash 99% of the bacteria off your hands. When washing hands, be careful that several people should not use the same basin of water to avoid cross-infection and spread diseases to each other for more than 15 seconds.
Second, don't spit or shake your nose: phlegm is a viscous liquid secreted by the respiratory tract and excreted by coughing. Everyone knows how to spit, but not everyone has a good way to spit.
Some people don't pay attention to the environment, spit everywhere, and throw their noses all over the floor, which not only affects hygiene but also harms their personal image. Some so-called "health lovers" spit sputum on the ground and wipe it with shoes worn on their feet, thinking that even if there are no traces of sputum, it will not hinder hygiene and health.
I don't know that sputum contains millions of bacteria, viruses, fungi, mycoplasma and so on. Especially people with respiratory diseases, such as tuberculosis, influenza and meningitis, have more bacteria and viruses in their sputum, especially in the early stage of SARS epidemic.
Someone checked a mouthful of sputum and found hundreds of thousands of bacteria in it. Millions of mycobacterium tuberculosis can be found in the sputum of the most annoying tuberculosis patients.
If you spit on the ground and the sputum is dry, bacteria will fly into the air with the dust, and healthy people may get respiratory diseases by inhaling such dust. So we should form a good habit of not spitting.
Sputum should be spit in the spittoon, which should be scrubbed regularly every day. Where there is no spittoon, the spittoon should be wrapped in waste paper and thrown into the wastebasket or dustbin to avoid spitting and maintain the hygiene of public places.
Third, don't cough or sneeze at others: coughing and sneezing are normal physiological phenomena of people, which is not surprising. However, sneezing in front of others or food without paying attention to the occasion is an unhealthy and impolite bad behavior.
According to the survey, a cough can eject 20,000 tiny droplets, and a sneeze can eject nearly 654.38+0 billion droplets. Moreover, the speed of droplet ejection is very fast, and it can fly out in less than 1 second.
6 meters, 9 meters away with the wind. The nasal cavity and throat are one of the places with the densest bacteria and viruses, and the sprayed droplets contain a lot of bacteria and viruses.
A sneeze can spit out 85 million bacteria. These tiny water droplets can float in the air for a long time, 30-60 minutes in a windless room, and up to 30 hours. After the water in the water drops evaporates, bacteria and viruses fly with the dust, which continues to endanger people's health.
Among the legal infectious diseases in China, 15 is airborne (such as influenza, measles, chickenpox, mumps, mycoplasma pneumonia, etc. Therefore, for everyone's health, people should pay attention to politeness and hygiene when coughing and sneezing, especially those with respiratory infectious diseases.
If you can't help sneezing in front of people or food, you should immediately take out a towel or paper towel and cover your mouth and nose. Turn your back on others or food when it is too late, and cover your mouth and nose with your hands.
4. No smoking: Smoking is harmful and useless, which is recognized by the scientific community all over the world. Tobacco smoke contains more than 3000 kinds of harmful substances.
Among them, there are mainly nicotine (nicotine), cigarette tar, light hydrofluoric acid, acrylic acid, carbon monoxide and so on. Nicotine is a toxic substance. Tobacco tar contains nitrosamines, phenols, arsenic, radioisotopes and other carcinogenic or carcinogenic substances, especially benzopyrene, which is recognized as a strong carcinogen.
According to statistics, the incidence of lung cancer in people who smoke 40 cigarettes a day is 70 times higher than that in non-smokers. In addition, smoking is also closely related to lip cancer, laryngeal cancer, esophageal cancer and gastric cancer.
Smoking can promote the development of systemic arteriosclerosis and hypertension, so the incidence and mortality of cardiovascular and cerebrovascular diseases of smokers are higher than those of non-smokers. In addition, smokers are prone to colds, rhinitis, sinusitis, bronchitis, bronchitis, emphysema and so on.
Other studies have shown that smoking is related to male impotence. .
Some people say that smoking can refresh oneself and improve work efficiency. Actually, this is a misunderstanding.
Modern medical research believes that nicotine has a dual effect on the central nervous system, that is, it is first excited and then inhibited. Therefore, people who smoke heavily for a long time lose their balance in the process of excitement and inhibition in the cerebral cortex, but instead show fatigue, insomnia, decreased memory, distracted attention and decreased work efficiency.
The incubation period of many smoking-related diseases is very long, and it is not as fast as eating highly toxic substances. So in a short time, people often can't see his harm.
Sometimes it takes decades from smoking to death. This is also the main reason why people don't know enough about the harm of smoking.
There are about 200-300 million smokers in China, accounting for more than15 of the national population and10-0/0.2 billion smokers in the world. Not only will it consume a lot of money every year, but many years later, the state and individuals will invest unimaginable money to treat various diseases caused by smoking. At present, European and American countries have seen the great harm of smoking and applied laws and economic policies.
3. How do kindergarten parents make speeches on life hygiene?
A: Gather a ray of sunshine and weave a colorful childhood. B: Leave a ray of breeze to spread the hope of tomorrow. A: Dear teachers and classmates: Hello, everyone.
Nice to see you again on this warm afternoon. I am the host Wang Xinli.
I'm the host, Ye Lijun. In this program, we will learn some health knowledge in daily life with you. Play music 1 min, and then turn down the volume. A student, you know? April is Patriotic Health Campaign Day in China.
B Yes, hygiene is closely related to our life, and it is also closely related to our life. A We should develop hygiene habits from childhood and be a young pioneer who loves hygiene and cleanliness.
B Then let's learn about personal hygiene! A 1, wash your hands before and after meals; 2, do three diligence: diligent bathing, diligent haircut, diligent dressing 3, diligent nail cutting; 5. Wash your hands frequently anytime and anywhere; 6. Pay attention to eye hygiene: don't read in strong light, don't read in a walking car, don't read while lying down, and don't rub your eyes with dirty hands; 7. Do not eat unsanitary food, do not eat unwashed food, and do not drink raw water; 8. Wash your face in the morning and evening, wash your face with running water, and don't use towels, washbasins and other items with others; 9. Brush your teeth in the morning and evening and rinse your mouth after meals; 10, insist on proper physical exercise every day, in order to enhance physical fitness and maintain good and abundant energy. B Please remember these ten personal hygiene knowledge to make yourself healthier! /kloc-Turn down the music in 0/minute. Classmate A, after personal hygiene, let's learn about food hygiene.
B In daily life, people often have some unhealthy eating habits and behaviors, but many people don't pay attention to them, which is very harmful to their health. This is the truth of the sentence "the disease enters from the mouth"
So students, we should pay attention to: 1, and get into the habit of washing hands before eating. People's hands do this and that every day, touching all kinds of things.
Will be infected with germs, viruses, parasitic eggs. Wash your hands carefully with soap before eating to reduce the possibility of "illness from the mouth".
2. Wash raw fruits and vegetables. Fruits and vegetables will not only be infected with germs, viruses and parasite eggs, but also remain pesticides and insecticides. If it is not cleaned, it may not only infect diseases, but also lead to pesticide poisoning.
Don't eat wild vegetables and fruits casually. There are many kinds of wild vegetables and wild fruits, some of which contain toxins harmful to human body. It is difficult for inexperienced people to distinguish clearly. Only by not eating wild vegetables and fruits casually can we avoid poisoning and ensure safety.
Don't eat rotten food. When food rots and deteriorates, it will have a sour and bitter taste; It gives off a special smell, which is caused by the reproduction of bacteria. Eating these foods will cause food poisoning.
Don't buy or eat the inferior food and drinks sold by street vendors at will. These inferior foods and drinks are often unqualified, and eating and drinking will be harmful to health.
6. Don't drink raw water. Whether the water is clean or not is difficult for the naked eye to tell. Clear and transparent water may also contain germs and viruses, and drinking boiled water is the safest.
Student B, food hygiene is related to our life, so we must pay attention to it. Play music 1 Turn down the music after one minute. B, environmental sanitation is also very important. Let's learn about environmental sanitation together.
Campus is an important place for us to study and work. The quality of campus environmental sanitation directly affects the work, study and life of teachers and students. At the same time, campus environmental sanitation is also an important symbol of a college's civilization, an intuitive influence factor on the school's external image, and a reflection of the comprehensive quality of school students.
As a student, the first thing we should do is to keep the campus clean and don't throw peels and scraps of paper everywhere. Everyone should develop good hygiene habits, so that our campus will always be clean and tidy, and all teachers and students can have a good working and learning environment. We should take the initiative to "wipe stains when we see them, pick up scraps of paper when we find them, sweep them when we meet garbage, and throw them when we meet moving pipes", with beautiful words and behaviors, without damaging flowers, grass and trees, wasting a drop of water and electricity, tearing up, littering, spitting and doodling.
Start from me, start from the small things around you, and be a contemporary civilized student. Students, we should do: 1, no littering, no chewing gum and no spitting.
Leave less footprints on the wall, spit less gum on the ground, throw less peels, have fewer sanitary corners, and have more clean paradise. 2, do not practice the lawn, do not pick flowers and shake trees.
"Grass also has life and needs your care." 3. Strengthen ideological and moral education.
Take the initiative to pick up the rubbish thrown by others on the ground, form the good habit of "civilization and neatness" and create a beautiful campus together! B students, I believe that as long as we can pick up a piece of white, we can decorate an inch of green shade, and as long as we do our bit, we can create a cleaner campus. /kloc-Turn down the music in 0/minute. Classmate A, how time flies! It's time to say goodbye again
B Yes, as the music falls, we should say goodbye again. Remember to listen to the next program on time.
4. Hygiene and health tips or documents
At least 0.27 yuan/day, Baidu library members can open, and the complete content can be viewed in the library > Talking about hygiene and health With the improvement of modern people's living standards, health is an issue that people attach great importance to.
Because good health is related to everyone's life, study, work and career as well as our life. Health is a necessary condition for a happy life every day, and hygiene is the guarantee of health. Health is inseparable from hygiene.
However, many people ignore the importance of hygiene when they are in good health, and with the influence of modern living environment, they are in a sub-health state. We should pay attention to hygiene.
Don't only know the importance of health when you are sick, but also realize how happy health is. And health is related to our usual good hygiene habits.
So we should develop good hygiene habits. The following are some personal hygiene habits that modern people should pay attention to: 1, dietary hygiene habits.
Food is the most important thing for people, and food is an indispensable factor in life. As the saying goes, disaster comes from the mouth and disease comes from the mouth. Many diseases are related to people's diet. Eating unclean things and drinking unclean water may cause illness. Therefore, we should eat as little raw food as possible in life, and wash the fruits to reduce the occurrence of diseases. Besides, we often cook some oil cakes, stinky tofu and barbecue on the roadside, in the streets and lanes, and at the stalls of those vendors.
2. Keep personal hygiene, change clothes frequently, take a bath frequently, cut your nails frequently, and wash your hands before and after meals. Only by paying attention to hygiene can we reduce the occurrence of diseases. We should also pay attention to environmental sanitation. Because we live in this environment, the quality of the environment will directly affect our physical and mental health. People will suffer from various diseases all the time in their lives. At home, we should also pay attention to cleaning every day and often open the window for air.
4. Health is not just about eating the right things.
5. Selected works of primary school students' health knowledge and common sense
Health tips: First, go to bed early and get up early every day to ensure a certain amount of sleep time. Second, strengthen exercise. After getting up every day, stick to the fresh air.
A complete book of primary school students' health knowledge: Part I, 1. When reading and writing, the distance between the eyes and the book should be one foot. In order to protect your teeth, you must brush your teeth in the morning and evening. 3. watch TV.
Health tip: From 1, always eat midnight snack. You'll get stomach cancer. Because the stomach can't rest. You can only eat four eggs a week. I ate too much. This is harmful to your health. .
Life tips? : 1. Use toothpaste skillfully: If there is a small area of skin injury or burns, applying a little toothpaste can immediately stop bleeding and relieve pain, prevent infection, and the curative effect is quite good.
Tips for healthy living: Some taboos about food collocation: 1. Eggs and saccharin can not be eaten together, which will lead to poisoning and even death; 2. Tofu and bees.
Primary school students' health knowledge: primary school students' health knowledge, personal health behavior zhidao 10 1, washing hands before and after meals; 2. Brush your teeth every morning and evening; 3. Take a bath, get a haircut and cut regularly.
Tips for eating healthy for primary school students? Explain in detail! Twelve dietary principles for primary school students 1. Pay attention to balanced nutrition. Eat all kinds of food, such as fruits, vegetables, fish, eggs, milk, etc. In the daily diet.
6. Hygiene and health tips or documents
At least 0.27 yuan/day, you can open Baidu library members and view all the contents in the library >
Original publisher: Lotus Seed 9 10
Talking about Hygiene and Health With the improvement of modern people's living standards, people attach great importance to health. Because good health is related to everyone's life, study, work and career as well as our life. Health is a necessary condition for a happy life every day, and hygiene is the guarantee of health. Health is inseparable from hygiene. However, many people ignore the importance of hygiene when they are in good health, and with the influence of modern living environment, they are in a sub-health state. We should pay attention to hygiene. Don't only know the importance of health when you are sick, but also realize how happy health is. And health is related to our usual good hygiene habits. So we should develop good hygiene habits. The following are some personal hygiene habits that modern people should pay attention to: 1, dietary hygiene habits. Food is the most important thing for people, and food is an indispensable factor in life. As the saying goes, disaster comes from the mouth and disease comes from the mouth. Many diseases are related to people's diet. Eating unclean things and drinking unclean water may cause illness. Therefore, we should eat as little raw food as possible in life, and wash the fruits to reduce the occurrence of diseases. Besides, we often cook some oil cakes, stinky tofu and barbecue on the roadside, in the streets and lanes, and at the stalls of those vendors. 2. Keep personal hygiene, change clothes frequently, take a bath frequently, cut your nails frequently, and wash your hands before and after meals. Only by paying attention to hygiene can we reduce the occurrence of diseases. We should also pay attention to environmental sanitation. Because we live in this environment, the quality of the environment will directly affect our physical and mental health. People will suffer from various diseases all the time in their lives. At home, we should also pay attention to cleaning every day and often open the window for air. 4. Health is not just about eating the right things.
7. Little common sense about children's life
Life tips! ! & gt 1。
Skills to make a cd with poor sound quality better >> The surface of the record is twill and the sound quality is worse. The solution is actually very simple.
Put the cd with poor sound quality in the refrigerator for 2 hours. After that, the water is evaporated.
It's gonna be okay. Of course, if the scratch is deep, it won't work.
& gt& gt2。 You can even fix your hair without hair gel. When I get up in the morning, my hair is in a mess.
However, the hair fixative was used up again. Use carbonated drinks instead.
Blow it with a hair dryer after painting, and you can have a beautiful shape. Why can you use carbonated drinks instead of hair gel to set your hair? In fact, it is the sugar in carbonated drinks that works.
The sugar content of this sour beverage is about 13. Sugar condenses when it dries, and is fixed when it is blown by a hair dryer.
Of course, it is harmless to hair and can last for a day. & gt3。
Painless plaster method >: The plaster on the leg hurts when it peels off. Especially men with more body hair are the most horrible.
How can I take off the plaster innocently? In fact, it is also very simple. Just dip the cotton swab in "baby oil" and gently detect the side of the plaster in contact with the skin. In this way, the plaster will naturally peel off.
And it will be clean and leave no traces. Why is it so effective to peel plaster with cotton swabs? Because the plaster has a lot of small space, "baby oil" can create a space between the plaster and the skin with little adhesion.
But you must remember that you must never use salad oil when applying this trick, because salad oil is harmful to your health. & gt& gt4。
Tips for turning lime into sweet orange >> Winter is the best season for oranges. However, limes are sometimes encountered.
At this time, there is a way to turn lime into sweet orange. The method is super simple. Put the oranges in the basket of the bike and walk around.
Try the oranges in the basket again when you come back. Ah, that's incredible. The lime somehow turned into a sweet orange.
In winter, people generally like to stay indoors and push bicycles around, which can just alleviate the lack of exercise, and eating oranges can also get vitamin C, which is really killing two birds with one stone, both beautiful and healthy. You must try.
Put the oranges in the bicycle basket and take a walk nearby. Why do oranges get sweet? After using this method, will oranges really become sweet? By detecting the components of oranges, we can find that the sugar content is 1 1.
6. After using this method, the sugar content is still 1 1. 6。
But you will obviously feel sweet when you eat it. In fact, the change of sweetness is related to the different acidity of oranges.
Oranges contain both sweetness and sourness. Acids are vulnerable to impact, so they will decrease after impact. In other words, because the acid is reduced, it feels sweet.
Check the acidity. Before using this method, it was 6. 6, it becomes 2 when used.
1。 Because the bicycle basket shakes, the acid is impacted, so it is reduced.
This will make the orange sweet, but I don't agree to give it too much impact. The impact of the same size as the bicycle basket is the most suitable.
& gt& gt5。 How to remove the scale from the kettle >: > After peeling the potatoes, put the remaining potato skins into the pot, pour water on the potato skins and heat them on the fire (just like boiling water). /kloc-after more than 0/0 minutes, pour out the contents of the pot, and the scale inside will come out with the potato skin. The kettle is clean.
Ha ha! & gt& gt6。 Ways to get rid of the burnt smell of rice >> If you burn the rice carelessly, you can quickly turn off the fire, put a skin on the rice and cover the pot. After 5 minutes, the shell can absorb the paste.
& gt& gt7。 What should I do if the biscuits taste bad when they are wet? >> The biscuits will soften when they are wet. Blow it with a hair dryer for a few minutes, and it will become crispy and delicious after cooling.
& gt& gt8。 What should I do if silk clothes wrinkle? After silk clothes are sprayed wet, put them in plastic bags and put them in the refrigerator. /kloc-After 0/0 minutes, they will be ironed easily.
& gt& gt9。 What should I do if the furniture loses its luster after being used for a long time >> Wipe the tarnished painted furniture with a clean soft cloth dipped in strong tea for 2~3 times continuously, and it is as bright as new.
& gt 10。 How to deal with oil spill when frying food >> When frying food, put a little salt in the oil pan so that the oil will not spill.
& gt& gt 1 1。 Blessed are the comrades who often cook their own noodles >> When cooking noodles, if you add a tablespoon of cooking oil to the water, the noodles will not stick, so as to prevent the noodle soup from overflowing the pot >:>.
& gt 12。 Skillfully peel potatoes >> Soak potatoes in hot water and then put them in cold water. It's easy to peel them.
& gt& gt 13。 Peach hair is so annoying >> Rub the peach gently in light salt water, and the peach hair will fall off quickly.
& gt& gt 14。 Make egg soup in front of mm >> When making egg soup, first drop some vinegar into the boiling soup, and the egg liquid will form beautiful egg flowers after it is put into the pot.
& gt& gt 15。 Knife method for cutting eggs (I've seen too many martial arts novels) >> When cutting boiled eggs, let the eggs cool completely and dip some water in the knife so that the yolk won't stick to the knife.
& gt& gt 16。 Adhesion after cooking jiaozi >:> Soak jiaozi in warm water before cooking, and the batter on the surface will be rinsed with cold water, so that it won't stick together.
& gt& gt 17。 Everyone has the experience of crying for onions >> When cutting onions, dip the knife in cold water before cutting, so that your eyes won't burn until you cry.
& gt& gt 18。 When a CD is scratched, it is difficult to read. Just use a paint brush on the scratch.
& gt& gt 19。 How to remove the odor after eating onions and garlic >> After eating garlic, onions and other foods, it is easy to produce odor in the mouth. You can drink half a cup of milk to get rid of the smell.
& gt& gt20。 Mop the floor easily >> When mopping the kitchen floor with a mop, pour a little vinegar on the mop to quickly remove the grease from the floor.
& gt& gt2 1。 Peel garlic >> Break garlic into small petals, soak it in hot water for a few minutes, and then take it out. The skin can be peeled off easily.
You can also put garlic cloves on the chopping board table and pat them with a kitchen knife a few times, and the skin will be easily peeled off. & gt& gt22。
Wash vegetables to get rid of bugs >> There are often some honey bugs on leafy vegetables bought from the market, which are not easy to wash down. If you soak it in salt water first (you can put half a teaspoon of salt in a basin of water), the bugs will be quickly separated from the leaves by salt.
In addition, the proportion of salt water is relatively large. After falling off, insects and vegetable leaves float on the water and are easily poured out of the basin. & gt& gt23。
Skillfully peel oranges >> Most people eat oranges with knives, and the juice overflows, which is both wasteful and unsanitary. In fact, peeling oranges is not difficult. Here's a contrast.
8. What are the daily parenting common sense?
Childhood is from 1 to under 3 years old.
During this period, the focus of health care is to arrange meals reasonably, cultivate good living and health habits, and take various measures to promote the development of movement and language. Prevent infectious diseases, parasitic diseases and accidents.
Preschool period Preschool period is from the age of 3 to before school. During this period, attention should be paid to oral hygiene and kimono health care to prevent dental caries and abnormal vision.
Make more use of games to promote children's psychological development. We should consolidate the good living and health habits that have been formed.
Give children safety education to prevent accidents and poisoning. School age refers to the school age from school to pre-puberty.
In the meantime, it is necessary to educate children to do a good job in school hygiene, attach importance to socialist moral quality education, and let children participate in all kinds of labor within their power.