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Which of these best defines the term "biosphere"?
the part of Earth where life occurs, which includes land, water, and air
a collection of populations in a habitat
the part of Earth where life occurs on land
the part of Earth where life occurs on land and in the water
Detailed Explanation
The definition of biosphere encompasses all places life occurs on Earth, including land, water, and air. A collection of populations in a habitat is called a community.
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