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Name the life processes needed to maintain life.


Life processes are:
(i) Nutrition (ii) Respiration
(iii) Transportation (iv) Excretion.

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Why does a single-celled organism not need specific organs for taking in food, exchange of gases or removal of wastes?

Why are life processes needed?

 


What exactly do life processes need to do?

From where do you get the energy to do work from?

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