Imagine that you are a geologist and you find an unconformity between two rock layers. What can you guess about the environment at the time the unconformity was forming?

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.

d. planting trees

the trees take in carbon to make oxygen.