What does the oxygen compositional layer of the atmosphere do

The hebrews originally migrated from a. india b. egypt c. arabia d. mesopotamia

Which force of change to earth is caused by the movement of tectonic plates? a. erosion b. pollution c. earthquake d. wind i need and it’s 35 points so can someone plz me

Explain the reason for having an equator and a prime meridian. how do these two lines us to navigate our world? describe your opinion in at least two to three sentences.