Darwin's natural selection is based on the following observations. Choose the one that is not true.

Natural resources are unlimited

Populations are stable in size except for seasonal fluctuations

Members of population vary in charcteristics

According to Darwin ,most of the variations are inherited, although resources are unlimited, these variations make resource utilisation better for few and enable them to reproduce  and leave more progeny. This would result in a change in population characteristics and new forms appear to arise.