Evolution of Earth’s Atmospher Flashcards
1
Q
What is the first stage of earth evolution
A
stage is marked by the loss of primordial atmosphere.
2
Q
What is the 2nd stage of evolution
A
the hot interior of the earth contributed to the evolution of the atmosphere
3
Q
Final stage of evolution
A
composition of the atmosphere was modified by the living world through the process of photosynthesis.
4
Q
Early stage of atmosphere contains
A
early atmosphere largely contained water vapour, nitrogen, carbon dioxide, methane, ammonia and very little of free oxygen. The process through which the gases were outpoured from the interior is called degassing.