ESS
Grade-8
Easy

Question

Human’s use __________ as a source of energy.

  1. Water
  2. Table
  3. Natural resources
  4. Plastic

hintHint:

Humans depend on natural resources for energy.

The correct answer is: Natural resources


    • Humans depend on natural resources as a source of energy.
    • They depend on natural resources for water, air, coal, and minerals.
    • Natural resources are hard to recover and highly polluted nowadays.

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    The picture below shows sound waves in different colors. Pick the color of the sound wave which is of the highest frequency. 
    Inserting image...

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