Scientist find vents rock on earth surface that is made of magnesium and smaller amounts of aluminum in silicone. what layer of earth might this rock scientist study?

Scientists think that convection currents flow in earth’s a. continents. b. mantle. c. lithosphere. d. inner core.

If u make mistakes on a school trip to knotts like standing up on a ride too early and they ask you not to do it again or and if you do it again you will be escorted out will it go on my student record? yes i know it is a dumb question

In what three areas is the us leader?