TOEFL Listening: TPO-TOEFL阅读TPO - U9KGQ8L3YZYG35XSN$

In paragraph 5, the author challenges the idea of a "biome" by noting that A. there are usually no very strong connections among the plants and animals living in a place B. plants and animals respond in the same way to the same circumstances C. particular combinations of flora and fauna do not generally come about purely by chance D. some animals are dependent on specific kinds of plants for food