What is one of the mechanisms that causes the movement of Earth's tectonic plates?
a) conduction of the core
b) convection of the core
c) conduction of the mantle
d) convection of the mantle

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

What part did glaciers play in forming the great lakes?

Which phrases describe oxygen's roles in earth’s atmosphere? check all that apply. allows fuels to burn forms clouds that produce rain is the gas that animals breathe is used by plants to produce food forms ozone that absorbs the sun's harmful rays