The layer of gas that surrounds the Earth.
A notable example of a volatile organic compound.
This is the most common element in air (it comprises 79%)
Chemical symbol CO. It is found in car exhaust and cigarettes, and can cause dizziness, headaches, fatigue, and even death if subjected to prolonged exposure.
Chemical symbol CO2. It is the gas humans exhale, and is also the major greenhouse gas contributing to global warming.
Particles in the air that are extremely tiny or invisible that can contribute to lung problems.
This is a gas that is basically oxygen with an extra atom.
People who advocate the health of our environment, and speak out to the public about what we need to do to save it.
This is the chemical symbol for Sulphur Dioxide
An abundance of unwanted/potentially dangerous substances found in our atmosphere.