The law reduced acid rain and improved public health by dramatically reducing emissions of sulfur dioxide (SO2) and oxides of nitrogen (NOx).
The answer is
C. Both systems help remove carbon dioxide from the body.
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High central plateaus sandwiched between tall mountains
Answer: CAPILLARIES
Explanation: Gas exchange is the delivery of oxygen from the lungs to the blood stream, and the elimination of carbon dioxide from the blood stream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessel is called capillaries, which are located in the walls of the alveoli.