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3 May, 12:47

What was the amount of oxygen in earths early atmosphere

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  1. 3 May, 13:06
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    The amount of oxygen in earths atmosphere was about one ten-quadrillionth of the of the amount presented today
  2. 3 May, 13:08
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    Answer: 21%

    Explanation:

    The atmosphere is the gaseous portion of the planet Earth. It therefore consists of several gases and air particles.

    In the atmosphere,

    -Nitrogen is the most abundant gas with 78%

    - Oxygen takes 21%,

    - Carbon dioxide takes 0.03%,

    - the remainder is unreactive gases and particles.
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