Multiple choice

Which Earth system component protects us from the sun and provides the air that we breathe?

  1. Geosphere

  2. Biosphere

  3. Hydrosphere

  4. Atmosphere

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The atmosphere is the layer of gases surrounding Earth that contains the oxygen we breathe and shields us from harmful solar radiation. The geosphere refers to the solid Earth, the biosphere includes all living organisms, and the hydrosphere consists of all Earth's water.