Question 9 — You are tasked with - Questions at the end of the chapter - Chapter 13 Class 8 - Our Home: Earth, a Unique Life Sustaining Planet

Last updated at July 13, 2026 by

Q 9
Question

You are tasked with designing a new settlement for humans on Mars. Name three things you would need to recreate from Earth to support human life there. Which of these do you think is the hardest to replicate, and why?

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Answer
We would need breathable air, liquid water and warmth; air is hardest.

Explanation

  • We need breathable air with oxygen for respiration.
  • We need liquid water for drinking and growing food.
  • We need the right temperature to stay warm.
  • A breathable atmosphere is hardest, since Mars's gravity is too weak to hold one.
Air, water and warmth are needed; air is hardest to recreate.
← Back to concept: 13.3.1 Position of the Earth
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