Because of the environment they live in.
Because of the environment they live in.
Because of the environment they live in.
Because of the environment they live in.
Natural development and selection.
Guppies natural enemies are bigger fish. When guppies are eggs diffrent fish and sea creature will eat them.
Because their population grows and their thing grows ;)
No, guppies can't be found in the natural habitat of a polar bear.
Its NaTuRaL sElEcTiOn if you didn't know.
They don't. The appearance of design in nature is an illusion that only the ideological keep to.
natural selection
Adaptation does not allow for natural selection: natural selection causes adaptation.
Simply mutation and natural selection against the backdrop of the immediate environment.