1. harmful gases such as sulfur oxides, CO2, and nitrogen are released when fossil fuels are burned.
2. it can cause air pollution and "smog"
3. Acid rain is caused by the burning of fossil fuels
Answer:
c
Explanation:
Gas exchange. Gas exchange occurs as a result of respiration, when carbon dioxide is excreted and oxygen taken up, and photosynthesis, when oxygen is excreted and carbon dioxide is taken up. The rate of gas exchange is affected by: the area available for diffusion.
