What are the two main sources of energy for living things? a. the sun and moon b. electricity and gasoline c. the sun and food d. food and water

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.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.