How the presence of life on earth has brought about environmental change Flashcards
1
Q
Atmospheric O2
A
Released via photolysis by photosynthetic bacteria (later plants) formed ozone layer
2
Q
Atmospheric CO2
A
Naturally released via volcanic action and is a greenhouse gas- essential for temperature regulation
3
Q
Water cycle
A
rain, evaporation, transpiration working together to spread water into land masses