Answer: The correct answer is populations change slowly over time.
Explanation:
Evolution is a slow process in which a species changes over time.
The transition from teeth to baleen mouth involved a slow process which took millions of years, for example, the whales are thought to have evolved from Pakicetus inachus around 53 million years ago. These Pakicetus were land animals with large teeth and long skulls. Later they evolved into species with reduced pelvis which lived in marine habitats and were able to drink saline water .
