Science, asked by saisodnar6, 6 months ago

please give answer of this

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Answered by Hudhaaz

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1-A stimulus causes an action or response, like the ringing of your alarm clock if you didn't sleep through it. Stimulus is a word often used in biology — something that causes a reaction in an organ or cell, for example. ... For more than one stimulus, use stimuli, not stimuluses.

You are hungry so you eat some food.

A rabbit gets scared so it runs away.

You are cold so you put on a jacket.

A dog is hot so lies in the shade.

2-Excretion is a process by which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys and skin. ... In unicellular organisms, waste products are discharged directly through the surface of the cell.

Excretion is defined as the process of expelling waste matter, or the waste matter expelled by this process. When a person goes to the bathroom to urinate, this is an example of excretion. Urine is an example ofexcretion.

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