All of Earth's water, land, and atmosphere within which life exists is known as:
A. a biome.
B. a community.
C. a population.
D. the biosphere.
The biosphere is the largest organizational grouping in ecology, it includes everyplace life is found on Earth. A population is all of 1 species in 1 area at 1 time, a community is all of the species in 1 area at 1 time, and a biome is a specific climax community established by the climate, which controls the plants living there, which in turn, control the animals living there.