ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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____ exists in our air in many different forms, such as, ozone, water, and carbon dioxide.
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Carbon
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Oxygen
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Nitrogen
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Phosphorus
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Explanation:
Detailed explanation-1: -Composition of air is: Nitrogen-78% Oxygen-21% Carbon dioxide-0.03 %
Detailed explanation-2: -Air is a mixture of a number of different gases. Nitrogen, oxygen, which is essential for animals and humans’ survival, carbon dioxide, water vapour, and trace amounts of other elements make up the atmosphere (argon, neon, etc.).
Detailed explanation-3: -The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen.
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