Some 2.5million people currently live in the sahara most of these in egypt mauritania morocco and algeria

true of false?

Rivers of drainage system. option- 1 sao francisco 2 amazon 3 subarnarekha 4 uruguay

[fw.02]sinkholes are often formed as a result of the actions of. a.heat on recharge b.pressure on aquifers c.acid in groundwater d.minerals in hot springs

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted