Multiple choice

What distinguishes Earth from other planets in our Solar System?

  1. presence of water in all three states of matter

  2. a rocky surface

  3. a solid core

  4. existence of an atmosphere
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Earth is unique in our solar system because it is the only planet known to have water in all three states (solid, liquid, and gas) on its surface, which is essential for life.

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