Igneous rock can be changed into what type of rock when subjected to heat?

Which factors add to the greenhouse effect and are caused by human activities?

Match the graph type to its description. 1. uses symbols to describe information pie 2. compares different quantities at the same point in time line 3. compares increases and decreases in a quantity over a period of time bar 4. shows the relationship of parts to each other and to the whole pictograph

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