According to $Darwin$,fitness refers to .....

Organisms that possess favorable variations are considered to be:

The Natural Selection Theory of Darwin is objected to,because it:

Which one of the following is $NOT$ the main postulate of Darwinism?

Darwin,in his 'Natural Selection Theory',did not believe in any role of which one of the following in organic evolution?

In the peppered moth $(Biston \text{ } betularia)$ in England, the dark-colored form became more prevalent than the light-colored form during the Industrial Revolution. This is an example of which of the following?