43+ History Of Earth's Atmosphere Gif. The first of earth's atmospheres was primarily made of hydrogen and helium, and was over. The atmosphere of earth is the layer of gases, commonly known as air, retained by earth's gravity, surrounding the planet earth and forming its planetary atmosphere.
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The atmosphere is the layer of gases around the earth. About a fifth of earth's atmosphere consists of oxygen, produced by plants. Notes and review unit 2 notes:
Volcanic activity also released water vapour, which condensed as the earth cooled to form the oceans.
Volcanic activity also released water vapour, which condensed as the earth cooled to form the oceans. Based on the relative volumes of the gases in earth's atmosphere, nitrogen is 3 times greater than oxygen. The earth's atmosphere is a layer of gases surrounding our planet and retained by the earth's gravity. The atmosphere of earth is the layer of gases, commonly known as air, retained by earth's gravity, surrounding the planet earth and forming its planetary atmosphere.
