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p7rindica6kels
p7rindica6kels p7rindica6kels
  • 13-09-2016
  • Geography
Answered

Which of the following statements about Earths atmosphere is true?


Earths atmosphere contains 78 percent water vapor which is essential to life.


Earths atmosphere contains 21 percent oxygen.


Earths atmosphere contains carbon dioxide which all life forms require.


Earths atmosphere allows radiation from the sun to pass through it and warm Earths surface.

Verified Answer :

Icho
Icho Icho
  • 10-10-2018

Earth's atmosphere contains 21 percent oxygen

Answer Link

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