Multiple choice

Which of the following nonliving elements do all living organisms depend on for survival?

  1. water, grass, air

  2. sun, air, water

  3. soil, sun, rocks

  4. water, rocks, air
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

All living organisms require sunlight for energy (directly or indirectly), air (oxygen or carbon dioxide), and water to sustain life processes. Grass and rocks are not universal requirements for all life forms.

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