Which is not an exhaustible source available on the Earth for man?

Which is not an exhaustible source available on the Earth for man?

  • (A) Water
  • (B) Air
  • (C) Oxygen
  • (D) Wood
  • We can’t consume the air in a way that depletes the resource in a human lifetime. We can certainly pollute the air we breathe, but the atmosphere is a vast and continuous media that isn’t used up by our activities. On a human timescale, the resource of air is treated as if it is inexhaustible and renewable because the resource isn’t realistically depleted by human activities, although the quality of the resource may be degraded. Air is treated as an inexhaustible natural resource because there is so much of it and we aren’t likely to use up the resource.
  • Air, when taken as the atmosphere of the planet Earth, is always freely available on a global scale even when it is being used or wasted. Water and wood have the tendency to be exhausted when overused, while oxygen also has the tendency to be exhausted in a closed environment, but the same is not true for Air.
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Related MCQs:

 ‘NATO’ is an abbreviation of:

  • (A) North Atlantic Treaty Organization
  • (B) Non-Aligned Treaty Organization
  • (C) Non-Aligned Trading Organization
  • (D) North American Transport Organization

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