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प्रश्न
Fill in the blank
Green plants need ________________to prepare food.
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उत्तर
Green plants need CO2 water and light to prepare food.
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संबंधित प्रश्न
What do you understand by the term polluted air?
Give two examples of modern fuels.
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
Fill in the blank
The supporter of combustion in air is _____.
Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.
Complete the statement given below by filling in the blank with the correct word from the words given:
The product formed which is common to both combustion and respiration is ______.
What is the percentage of oxygen in air?
Why is carbon-dioxide gas used to extinguish fire?
List out the uses of nitrogen.
Explain the following observations very briefly
An empty glass in fact is not empty.
