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प्रश्न
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
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उत्तर
Plants and animals maintain the balance of carbon dioxide and oxygen in the air.
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संबंधित प्रश्न
A fuel when used releases least amount of pollutants in the air.
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
Dust particles help in the ________ of water vapour in air.
Tick (√) the most appropriate answer.
The presence of water vapour in air is essential for :
Complete and balance the following equation
CaO + H2O →
Fill in the blank
Green plants need ________________to prepare food.
State the utility of oxygen for respiration in living organisms
Air is made up of oxygen only.
Whales come up to the water surface to breathe in oxygen.
The amount of water vapour in the air is more in windy places than in other areas.
A ______ gas that is used to remove carbon impurities from the steel.
