Question

why do organism need water?do you know of any activity may be polluting this water source

Answer 1

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Organisms need water for the following resources :

i) all circular processes need water is a medium. Usually, the rections dead take place in our body or within the cells occurs between substance that are dissolved in water.

Since most of the substances are transported in a dissolved form, water is necessary.

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Answer 2

Answer:

Organisms need water because: (i) Cellular processes need water for their functioning. (ii) Substances dissolve in water for reactions to take place within the cells. (iii) Transportation of substances within the body need water. (iv) Water helps in digestion of food and its absorption in the blood.

The discharge of waste water from homes, industries, hospitals, etc. into the river pollutes this fresh water source.