What causes tectonic plates to move?
question 2 options:

convection currents in the mantle are driven by heat leftover from earth's formation and from radioactive materials.

convection currents in the core cause the magnetic poles to flip which drives the tectonic plates.

the density of the continental crust causes it to sink into the earth which pulls on the tectonic plates.

Which of the following statements best explains the relationship between medicines and concerns about the shrinking of the amazon rainforest?

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

Who developed the theory of plate tectonics?