What is not a feature of natural selection a) competition for resources
b) production of many offspring
c) selection by humans
d) variation within the population

C

Explanation:

Selection by human is defiantly not natural selection. Selection by human is called selective breeding which is when two different breeds are put together to produce an offspring with special characteristics.

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not sure if this is what you'r looking for nnew= nold

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it