Earth's atmosphere compared to the Moon and other planets with out an atmosphere

Earth's atmosphere has O2 (Oxygen) and O3 (Ozone) to provide air for everything to live and survive. Air contains 2 main gases that we breath today. Nitrogen is 75%, Oxygen is 24%, and there is 1% of other gases in the air. In Earth's atmosphere their is an Ozone lair witch protects us from the harmful raise of the sun. Unlike Earth the Moon is like a died planet floating on an orbit around the Earth.