Physics
The motion of a body around a circular path is an example of

Uniform speed, variable velocity
Uniform velocity, variable acceleration
Uniform speed, variable acceleration
Uniform speed, uniform velocity

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Physics
Plants are dried up in winter due to frost because

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

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