Q: Which of the following phenomena might have influenced the evolution of organisms?
a) Continental drift
b) Glacial cycles
The Correct Answer is Both1 and 2.
Continental drift theory
- This theory was propounded b Alfred Wegner.
- This theory deals with the distribution of the oceans and the continents.
- According to this theory, all the continents formed a single continental mass- Pangea and mega ocean- Panthalassa surrounded it.
- Pangaea started splitting and broke down into two large continental masses as Laurasia and Gondwanaland forming the northern and southern components respectively.
- The Continental drift must have moved some animals from one continent to others and few getting stuck in the same place, which must have influenced the evolution.
Glacial cycles
- It would have affected evolution as many might not able to tolerate extreme cold and would have extincted.
- The rise in sea level due to glacial melt also might have affected the evolution of organisms.
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