What process occurs when molecules move from a crowded area to a less crowded area ? Give evidence

answer; /// i believe that the correct answer is (50%);

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.

not always but somethings can be reproduced in a laboratory.