Very early it would have been mainly hydrogen & helium,
then the sun lit up (fusion started) and they would have been lost leaving mostly Argon & nitrogen with traces of stuff from volcanic out-gassing: H2O, CO2, SO2, H2S, & HCl.
After life formed there would have been methane,
but not until after chlorophyll was invented was there any oxygen.
Oxygen (O2) was not present in early Earth's reducing atmosphere. It only became abundant in the atmosphere due to the photosynthetic activity of cyanobacteria and other early organisms.
It is believed that the early Earth's atmosphere did not contain significant amounts of oxygen. Oxygen began to accumulate in the atmosphere around 2.4 billion years ago due to the emergence of photosynthetic organisms.
The two most common elements in Earth's atmosphere are nitrogen, making up about 78%, and oxygen, making up about 21%.
These gases are nitrogen, oxygen and argon.
The increased oxygen levels in Earth's atmosphere today compared to earlier in its history are due to the evolution and proliferation of photosynthetic organisms like plants and cyanobacteria. These organisms release oxygen as a byproduct of photosynthesis, gradually increasing its concentration in the atmosphere over millions of years.
biogeochemistry is used by earths atmosphere
Airplanes are used for transportation within the earths atmosphere where as spaceships are for travel outside and eventually back into the earths atmosphere
how do geologists think earths atmosphere is formed
STRATOSPHERE
Thermosphere, it is also the atmosphere with the highest temperatures.
Meteoritesis what we call stones that enter the earths atmosphere.
There is no atmosphere on the Earth's moon.
What is the earths atmosphere made of
what causes all of the changes that take place in earths atmosphere is the tilt of the earths axis
No
pooo
Meteoritesis what we call stones that enter the earths atmosphere.