Multiple choice

What is the biosphere?

  1. All areas of the earth occupied by living organisms.

  2. All areas of the earth occupied by water.

  3. All areas of the outer atmosphere

  4. No idea
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The biosphere is the global sum of all ecosystems; it is the zone of life on Earth, including all living organisms and their interactions with the environment.

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