Some planets have atmospheres.
An atmosphere is composed of material that is in its gaseous state and is held to a body by gravity. There are differences of opinion about the composition of the earth's early atmosphere, but it is thought that there was very little oxygen, and more carbon dioxide than we have today. Oxygen is released by plants, and we owe the presence of the oxygen that we breathe today to them. The written description of your planet's climate and weather. . A diagram of major climatic ocean and air currents.