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Environmental Issues
Question
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Amount of Co, in expired air is about

  • 0.04%

  • 0.03%

  • 4.5%

  • 21%

Answer

C.

4.5%

Amount of Co, in expired air is 4.4%. The air we breathe in contains about 0.04% CO,. The air we breathe out contains about 4% CO,. In other words, exhaled air contains about 100 times the concentration of CO, that inhaled air does.

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The cause of acid rain is :

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5 .........are major aerosol pollutant present in jet aircraft emission.

Write “True” or “False” :

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Coin one word for the following statements :
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Coin one word for the following statements :
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