When we breathe we take air into our lungs. Air is all around us. Without this air we would die. This air surrounding the planet is called the atmosphere. The gases in the atmosphere are mostly nitrogen and oxygen. The sun shines directly over the equator. The further away from the equator you go the colder it gets. We know that air moves upwards when it’s heated. When the sun heats the air around the earth it causes that air to move. Warm air rises and colder air moves down to take its place. By Kiera
