Atmosphere

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Green House gas

Green house gas is a gas that makes sure the earths temp is OK for all the living things on earth.A scientist could be the one to study this Green house gas because he/she should know why the gas just makes the temp enough for us to handle and why the gas doesn't get so bad that it could kill us.They should also study if the green house gas will ever get out of control.

Acid Rain

The issue is that Acid Rain is getting in to the lakes and rivers.The cause is that nitrogen oxides and sulfur oxides are combing with the water vapor and making Acid Rain.Some consequentness is that the acid is killing plants and animals and getting in to the rivers and lakes.