What criteria do we use to decide whether something is alive?
What criteria do we use to decide whether something is alive?
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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. Therefore, the presence of molecular movement inside the organisms used to decide whether something is alive or not.
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We tend to think of some sort of movement, either growth-related or not, as common evidence for being alive.
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