Without genetic , natural selection could not occur

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment