What is the movement of tectonic plates caused by?
a) convection currents in earth's mantle.
b) the gravity of the iron-nickel core.
c) the rotation of the earth.
d) the moho discontinuity.

Concealer circle oh in which arc xy measures 16 pi centimeters the length of the radius of the circle is 32 cm what is the circumference of the circle

How many years is a term in the senate

Which of the following best describes the circumstance under which countries block the importation of certain products into their country? a. importation blockade b.trade barrier c.trade inhibitor d. domestic protection act