EASY
Earn 100

can neither be created nor destroyed but can be transformed from one form to another form.

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Important Questions on Natural Resources and Its Sustainable Use

MEDIUM
A teacher asks the students of class IV to share various ways in which the used wrapping paper can be used again. She is trying to discuss the:
EASY
When CNG or LPG undergoes complete combustion, the products formed is /are _____.
EASY
Greenhouse gases are the ones which allow the heat emitted by earth to pass out.
MEDIUM
Which one of the following statements is not correct from the diagram of the food web?
EASY
Geothermal energy can only be used in the area where it is harnessed because:
EASY
Use of handmade paper may help in saving trees as it is made of:
HARD
What can happen if coal reserves are used heavily? How do they deplete? 
EASY
Geothermal energy is an alternative source of energy. For this energy, the most feasible regions are those that _____.
EASY
Geothermal energy is an alternative source of energy. For this energy, the most feasible regions are those that _____.
MEDIUM
What should we do to conserve non-renewable energy resources?
EASY
The two forms of oxygen found in the atmosphere are