Which of the Following Choices Best Describes How an Ecologist

Multiple Choice

Which of the following choices best describes how an ecologist would typically study an ecosystem? The ecologist would study

A) only a single animal or plant
B) an animal or plant, plus other organisms with which it interacts
C) an animal or plant, the organisms it interacts with, and its water supply
D) an animal or plant, plus all the biotic and abiotic aspects of the ecosystem in which it lives
E) the water supply and other non-living aspects of an ecosystem