What is the biological definition for survival?

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What is the biological definition for survival? What does an organism need to survive?
 

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James R
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Survival is just living rather than dying. There's no special biological definition.

What is needed to live? It depends on the organism. Too much carbon dioxide will kill a human being, but plants need carbon dioxide.
 
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Phobos
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I suppose you could distinguish between the survival of an individual vs. a species...or even for a single gene. My handy dandy biology dictionary has this to offer...

Survival Value - The nature or degree of the effectiveness of a given characteristic in promoting the organism's ability to contribute offspring to the future generation.
 

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