The relative roles that abiotic and biotic factors play in the distribution of organisms i

The relative roles that abiotic and biotic factors play in the distribution of organisms is especially important now, when the world is confronted with the consequences of a growing human population. Changes in climate, land use, and habitat destruction are currently causing dramatic decreases in biodiversity throughout the world. An understanding of climate-organism relationships is essential to efforts to preserve and manage Earths biodiversity.

The authors main purpose in paragraph 5 is to

A．explain the process of studying organism responses to climate change

B．stress the importance of learning how climate affects plants and animals

C．illustrate an important point about factors affecting biodiversity

D．examine current research practices on the distribution of organisms on Earth

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