题目详情
多选题 What are the characteristics of a food chain
A. It is made up of 3 to 5 links
B. It begins with a green plant, belonging to the producer of ecosystem
C. Other links are usually predatory animals, belonging to the consumers of ecosystem
D. The carrot, the corn and the trees are usually producers
学科:大学英语IV(第2期)
时间:2023-05-10 10:33:52
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