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people, rats, and batsYou only need one - its called death.
It is not a matter of agreement, it is a matter of accepting the overwhelming evidences in support of the theory of evolution by natural selection.
natural selection
Those behaviours that are influenced by heritable factors are subject to natural selection. For most animals, all behaviour is, to some degree, the result of or at least affected by heritable factors.
Adaptation is the result of natural selection.
because it does
Environmental factors ARE evolution by natural selection. The immediate environment is the selector of the organisms that are differentially successful against the immediate environment.
Mutation and natural selection.
Natural selection and traits
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Crossing-over increases the genetic variation within a population, which is required for natural selection to act upon.
Environmental change and variation :)
Its NaTuRaL sElEcTiOn if you didn't know.
The two factors required for a character of trait to change over time through natural selection are heritability of the trait and a differentiation of fitness between traits.
there is variation in traits , differential reproduction and last is heredity
people, rats, and batsYou only need one - its called death.