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The water cycle is maintained mainly by…

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The water cycle is maintained mainly by

A. evaporation of water in the environment

B. evaporation and condensation of water in the environment

C. condensation of water in the environment

D. transpiration and respiration in plants.




Evaporation is the changing of the physical state of water from liquid to vapour. It is a key part of the water cycle, as water is dried out of the earth and seas into the atmosphere to form clouds through evaporation.

Condensation is the opposite of evaporation; it involves the return of water from the vapour state to the liquid state.

Now for the right answer to the above question:

  1. A is not the right answer. not evaporation alone.
  2. B is correct. both evaporation and condensation are key processes involved in water cycle.
  3. C is incorrect. not condensation alone.
  4. D is incorrect. respiration in plants has no relationship with water cycle.
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You may please note this/these:

  • During water cycle, evaporation helps to change the state of water to clouds and vapour.
  • Condensation helps return the water to the earth by changing its state from cloud to liquid.
  • Higher temperature favours evaporation, while lower temperature favours condensation.

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/ culled from 2020 JAMB-UTME biology past question 34 /

The water cycle is maintained mainly by... » QuizTablet
The water cycle is maintained mainly by... » QuizTablet


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