radiation

depletion of ozone

greenhouse effect

condensation

cellular respiration by plants and animals

Factory emissions

Photosynthesis

Sunlight

Temperatures will continue to increase due to a rise in CO2.

Temperatures will decrease due to a rise in CO2.

Temperatures will remain stable.

Temperatures will disappear.

methane

water vapor

oxygen

carbon dioxide

There is too much nitrogen and too little Argon.

There is too much Argon and too little Oxygen.

There is too much Carbon Dioxide and too little Nitrogen.

There is too much Carbon Dioxied and too little Oxygen.

oxygen and methane

nitrogen and chlorine

water vapor and carbon dioxide

carbon dioxide and sulfur

oxygen levels would decrease due to more photosynthesis

oxygen levels would stay the same

carbon dioxide would decrease due to more photosynthesis

carbon dioxide would increase due to trees using up all the water