The answer is C. Ozone layer
Mario Molina was a recipient, together with his mentor Frank Sherwood Rowland, of the 1995 Nobel Prize in Chemistry for his role in discovering that some man-made compounds, namely chlorofluorocarbon gases, were depleting the ozone layer.
Answer:
48 of 50 states are located on the mainland of the United States.
When a supply becomes a large and know area.
i think its d and b or c
