Biodiversity is the basic guarantee of ecosystem stability, which is not only the basic feature of the life-filled earth, but also the priceless treasure for human survival. However, human life is reducing biodiversity at an alarming rate. Since the 20th century, an average of one species has become extinct every day, while in the 1990s, scientists have estimated that 140 species have been extinct every day, thus threatening the survival of 10% of the world's high-ranking positions and 3 picks of birds. 42% of the world's 270 turtle reptiles, 42% of the 150 primates, are on the verge of extinction.
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Human activities have a serious impact on the earth's ecosystem.