Atmosphere: The atmosphere covers the Earth.
It is a thin layer of mixed gases which make up the air we
breathe. This thin layer also helps the Earth from
becoming too hot or too cold.
Oceans: Oceans cover about 70 % of Earth's surface.
Their large size and thermal properties allow them to
store a lot of heat.
Land: Land covers 27 % of Earth's surface and land
topography influences weather patterns.