Multiple choice

What properties of Earth make life possible?

  1. Liquid water and oxygen

  2. The atmosphere and oxygen

  3. Carbon dioxide and water

  4. The atmosphere and liquid water

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

Earth's unique atmosphere provides protection and moderate temperatures, while liquid water is essential as a universal solvent for biochemical reactions. Together, these two factors are primary drivers for making life possible.

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