Question

What criteria do we use to decide whether something is alive?

Answer 1

Answer:

Any visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not. However, a living organism can also have movements, which are not visible to the naked eye.

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Answer 2

Visible movements like growth of organisms, green colour of plants or running of animals etc., acts as the main criteria to decide whether something is alive or not.