Life Supporting Gases

O2, CO2 and N2 being the life supporting gases are chiefly concentrated in:

  1. Stratosphere
  2. Exosphere
  3. Troposphere
  4. None of these
Monis Rasool Professor Asked on 10th September 2015 in Science.
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    Answer: (3) Troposphere

    O2, CO2 and N2 being the life supporting gases are chiefly concentrated in troposphere. It is the lowest layer of the Earth’s atmosphere. It is bonded on the top by a layer of air called the troposphere. It contains 99%  of the water vapor in the atmosphere.

    RE: Life Supporting Gases


    It is made up of several different gasses. It consists of 78 percent nitrogen, 21 percent of oxygen and 1 percent carbon dioxide.
    It starts at the Earth’s surface and goes up to 7 to 20 km above see level. It is heated from below.

    Atmosphere is made up with 4 layer.
    There are name of the layers-

    1. Troposphere
    2. Stratosphere
    3. Mesosphere
    4. Thermosphere
    Anurag Mishra Professor Answered on 11th September 2015.
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