3. A "stationary pyramid" is one that shows a population that
O does not move
O has mostly old people
has mostly young people
O remains somewhat constant

At which point on the diagram do convection currents occur to drive plate movement?

Name one type of data that h-r diagrams do not show.

All of the following came out of china and were exchanged along the silk road, except a. papermaking b. block printing c. buddhism d. compasses select the best answer from the choices provided a b c d