(1) is a natural process. Many species had ceased to ex...
问答题(1) is a natural process. Many species had ceased to exist before humans (2). However, in the last 400 years, the number of animals and plants becoming (3) has reached crisis point. Human population levels have risen dramatically in the same time period and man's predatory (4) combined with his ruthless consumption of natural (5) are directly responsible for the situation. 无解析