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Water: A Precious Resource — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceWater: A Precious Resource1 Mark
MCQ
Earth appear blue from sky due to presence of:
  • A
    Desert
  • B
    Mountains
  • C
    Land
  • ✓
    Water
✓

Answer

Correct option: D.
Water

The Earth has been blue for over $4$ billion years because of the liquid water on its surface.
There is only one known planet with permanent bodies of liquid water at its surface: ours.
Earth sciences allow us to explain why the Earth has almost always been blue: it's neither too warm nor too cold.

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