What is the biosphere?

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Multiple Choice

What is the biosphere?

The main idea here is what the term biosphere means: it is the global sum of all living things and their interactions with the surrounding environment. The biosphere includes every ecosystem where life exists—on land, in the air, and in the oceans and freshwaters—and it encompasses how living organisms interact with each other and with nonliving factors like air, water, and soil. Lithosphere refers specifically to the solid Earth’s crust and upper mantle; atmosphere is the layer of gases surrounding our planet; hydrosphere covers all water on Earth. Those are the separate nonliving components, while the biosphere is about life and its relationships within those components.

The main idea here is what the term biosphere means: it is the global sum of all living things and their interactions with the surrounding environment. The biosphere includes every ecosystem where life exists—on land, in the air, and in the oceans and freshwaters—and it encompasses how living organisms interact with each other and with nonliving factors like air, water, and soil.

Lithosphere refers specifically to the solid Earth’s crust and upper mantle; atmosphere is the layer of gases surrounding our planet; hydrosphere covers all water on Earth. Those are the separate nonliving components, while the biosphere is about life and its relationships within those components.

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