All of the earth's water, land, and atmosphere within which life exists is known as
1) a population
2) an ecosystem
3) the biosphere
4) a biotic community
The fact that an organism cannot live without interacting with its surroundings is a basic concept in the field of study known as
1) ecology
2) evolution
3) behavior
4) technology
In the biosphere, what are some of the major abiotic factors that determine the distribution and types of plant communities?
1) temperature, sunlight, and rainfall
2) humidity, location, and humans
3) soil type, soil bacteria, and soil water
4) insects, carbon dioxide, and nitrogen in the air
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