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The relationship between humans and animals is very close. Animals are invaluable treasures left by nature for human beings. It is a friend of our humanity. Their death and death are closely related to our human life. The relationship between biology and biology is both close and struggling. They are said to be close because both plants and animals live in nature. The "space chain" connects plants and animals, and abiotic factors such as water, soil, temperature, sunlight, and air constitute the earth. The biosphere of the surface. The biosphere is the general term for all living things on the surface of the earth and the natural environment in which it interacts. In the biosphere, the exchange of matter and energy is constantly being carried out between living things and the environment, thus establishing a dynamic equilibrium relationship, which is the ecosystem.