In this family, man is the master of the earth. Besides us, there are many creatures, such as flowers, trees, insects, fish, birds and animals. These creatures live in the same environment as us, and together they form this big family. Water is the source of life, and people can't live without water. The water contained in human body accounts for about 65% of body weight. If the human body loses more than 65,438+00% water, it is a necessary condition for human survival. People breathe air all the time. Oxygen comes from photosynthesis of plants, and all kinds of plants are oxygen processing plants. If there were no plants on the earth, we humans and other life would cease to exist. Wild animals depend on plants and can also protect them. Take birds as an example. 90% of birds feed on insects, and many beneficial birds are the guardians of crops and trees. It is the natural enemy of pests. 100 tree bugs can eat up the leaves of a big pine tree in ten days, while a pair of big tits can eat more than 400 bugs a day. Without these beneficial birds, pests would be rampant. On the earth, human plants and animals are actually an interdependent "biosphere" and "circle of friends". No one can live without anyone. The reason why human beings can survive on the earth is because of ecological balance. The earth provides us with life support systems-air, water, proper light and heat, energy and so on. In fact, this primitive ecological balance is extremely rare from a global perspective, and we may only see it today in places where humans have never set foot. The natural environment provides environmental resources for human survival and development, but it has also been destroyed.
Therefore, please protect the environment and treat our home well. Only in this way can our home become better.