Which series represents the correct sequence of events,from earliest to latest?
A) Permian mass extinction,decline in oxygen levels,drying of lowland swamps
B) Permian mass extinction,drying of lowland swamps,decline in oxygen levels
C) Decline in oxygen levels,Permian mass extinction,drying of lowland swamps
D) Drying of lowland swamps,Permian mass extinction,decline in oxygen levels
E) Drying of lowland swamps,decline in oxygen levels,Permian mass extinction
Correct Answer:
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