This is why instinct, determined by natural selection, repels it.
What is the theory of Natural Selection, and how did Darwin arrive at it?
The theory or principle of Natural Selection can also be applied to nations.
And this is really all that M. Flourens can make of Natural Selection.
Natural selection does not cover the case at all—has nothing to do with it.
This is quite compatible with the action of natural selection.
It was Darwin who put the crown on the edifice by his theory of natural selection.
Hints of the idea of Natural Selection have been detected elsewhere.
Whatever be our estimate of the importance of Natural Selection, in this we all agree.
Here again he puts the influence of Natural Selection in the first rank.