Water vapour (produced rain-rivers, lakes, oceans) carbon dioxide nitrogen
earth's plates formed them and without them we would not have much land .
Volcano Eruptions
It is a byproduct of the life processes on Earth. Earth's early atmosphere contained no Oxygen, but Earth was slowly Terra-formed by life and obtained an Oxygen rich atmosphere.
As the earth cooled, water vapour in the atmosphere condensed to a liquid (water) and fell to the earth as rain the make the oceans.
Volcanic eruptions, they produced a lot of carbon dioxide which made up the early atmosphere.
Early volcanoes discharged different combinations of gases into the Earth's atmosphere creating rain, which cooled the planet and formed solid land masses, and every other element discovered presently.
After loss of the hydrogen, helium and other hydrogen-containing gases from early Earth due to the Sun's radiation, primitive Earth was without an atmosphere. The first atmosphere was formed by gases leaking out from the interior of the early Earth, which still goes on today in volcanoes. Without an atmosphere, life would not have formed.
No. The early Earth's atmosphere contained a lot of ammonia, for example.
i mean i dont realy know just Google the question
oxygen
dioxide
photosynthesis