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प्रश्न
What is the source of energy for all ecosystems?
उत्तर
The source of energy for all ecosystems is the Sun.
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संबंधित प्रश्न
Give one example of a good domestic fuel.
What substance is obtained as a residue when wood is burned in a limited supply of air?
What is a solar cell? State two uses of solar cells. State whether a solar cell produces a.c. or dc. Give one disadvantage of using a solar cell.
State the energy transformation in the following:
electricity is obtained from hydro energy.
State the energy transformation in the following:
electricity is obtained from nuclear energy.
Name two renewable and the two non-renewable sources of energy.
State two limitations of solar energy.
State two advantages of box type solar cooker.
Nuclear fusion.
Which of the following is a non-renewable source of energy?
