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1 Did you ever wonder why there was no life when earth began? One reason is that there was no oxygen. Hydrogen and helium were the two gases that made up the earth's early atmosphere.
2 These elements have very small masses. Because of this, they escaped into space. Earth's gravity was not strong enough to hold onto them. The solar wind whipped them away.
3 So, how was our atmosphere formed? You have learned that when a volcano erupts, huge amounts of gases escape. This is called outgassing.
4 Much of this gas is water vapor. Carbon dioxide and nitrogen also erupt from volcanoes. Many scientists think the process of outgassing is what formed our early atmosphere.
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∙ 13y ago
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True or false there was a great deal of free oxygen in earths atmosphere before the first life forms developed?
false
Why did anaerobic respiration developed first?
Because aerobic respiration wouldn't have worked very well when there was no oxygen to speak of in the atmosphere.
What would happen if there is were no atmosphere on the earth?
If there were no atmosphere, life, as we know it, would never have developed on Earth.
Where did Earth's secondary atmosphere most likely developed from?
volcanic gases
What common gas was not part of Earth's original atmosphere?
Oxygen, now about 20% of the atmosphere, was not part of the original atmosphere of hthe Earth. It was produced by plants, after life developed.
When were canoes first developed?
when were the first canoes developed
What is the earth's first atmosphere primarily compose of?
the earth first atmosphere is troposphere
Who developed the first alphbet?
The Phoenicians developed the first alphabet
Where were the first robots developed?
The first robots were developed in Japan.
When was the first ROV developed?
the first ROV was developed in 1953
When was the first atmosphere?
The idea to when first atmosphere was made is difficult. The atmosphere is present from the beginning. This allowed human life on earth.
What developed because of the development of the ozone in the stratosphere and oxygen in the atmosphere?
An ozone hole developed due to the ozone depletion. It is the lowering of ozone concentration.
