Ants and aphids often live near each other. the ants feed on wastes produced by the aphids, and the aphids are protected from predators by the presence of the ants. what type of relationship is this?

the fossil record provides evidence of a common ancestor to many species.

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.