Multiple choice

__________ is the ultimate source of energy for all living organisms.

  1. Oxygen

  2. Carbon dioxide

  3. Sun

  4. Water

  5. Chlorophyll
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option. Sun is the ultimate source of energy for all living organisms. In plants, solar energy is captured by the leaves and stored in the form of food. 

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