Physics
Which of the following options correctly explains the term heat budget?

It is the balance between incoming and outgoing radiation
It is a mode of transfer of heat through matter by molecular activity.
It is the amount of heat which the surface of earth receives from the sun.
It is the radiation from the earth in the form of long waves.

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Physics
Plants are dried up in winter due to frost because

Respiration does not take place at low temperature
Photosynthesis does not take place at such low temperature
Evaporation does not take place
There is mechanical loss of tissues and drought condition prevails

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