The population of sub-saharan africa is characterized by

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

Ocean crust is a. made from submerged continents b. magnetically produced crust c. produced at mid-ocean ridge d. produced at all plate boundaries

Land cool more quickly than water. as a result the pressure over the water is lower than that over the land, and the air moves from the land to the water. what is this known as. a) prevailing winds b) sea breexes c) land breezes d) valley breezes