Gases such as carbon dioxide help O trap heat on eath, causing the greenhouse effect
O release oxygen from decomposing organisms
block UV radiation from the sun
O convert nitrogen gas to ammonia

because of

this is math not biology xd

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.