Suggest two biotic factors that caused a great difference in the bio diversity in North America and Africa and explain why they cause this difference.

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.

only b 

It was said to have happened by earthquakes, the shifts in the tectonic plates moved everything