Earths atmosphere

Earth is very special compared to other planets because of its atmosphere. Earths atmosphere is compromised of several different layers covering the earth in a protective blanket. One of these layers is the ozone layer. The ozone layer protects the people and animals of earth from harmful ultraviolet light produced by the sun. The earths atmospheric pressure witch creates high and low pressure systems. This allows for weather and thus less extreme temperatures like on other planets. The other substances in the atmosphere consist of 78% nitrogen, 21% oxygen, and 1% other gases.