Why was the development of jaws an important step in the evolution of fishes

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.

its temperature is increasing. this causes molecular vibrations to increase.