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Outgassing from volcanoes formed the Earth's original atmosphere. Later green plants converted large amounts of carbon dioxide in the atmosphere to create the modern atmosphere with roughly 20% oxygen, 80% nitrogen, and tiny amounts of other gasses.
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Where does earths atmosphere come from?
Plants
Where do these main gases come from?
they come from earths atmosphere and gases
Where does the oxygen in earths atmosphere come from?
Plantae (plants)
What do we call pieces of stone that come into the earths atmosphere?
It is a meteorite (meteor).
What is the earths atmosphere made of?
What is the earths atmosphere made of
Where does the earths atmosphere end?
the earths atmosphere ends in the exosphere
What percent of the Earths atmosphere is Calcium?
67.547296% of the earths atmosphere is calcium
Is earths atmosphere strong or weak?
Is earths atmosphere string or weak
How do shooting stars come?
Shooting stars are not really stars they are asteroids cought in the Earths atmosphere and the atmosphere is burning it up.
Where does the free oxygen in Earths atmosphere come from?
The free oxygen bubbled up from the oceans.
What is the highest layer of the earths atmosphere?
The highest layer of earths atmosphere is the exosphere.
Which layer of earths atmosphere is the hottest layer?
which layer of earths atmosphere is the coldest
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