What is the Great Barrier Reef made of?
a. coral
b. coal
c. ocean debris

In what way does renewable energy differ form nonrenewable energy?

If we review the changes in the landscape surrounding the great salt lake in utah we can see a change in topography. look at the area to the south of the lake. what change has occurred during the last twenty-nine years? a) erosion of the hills b) an increase in marshland c) flooding of the area and the development of wetlands d) deposition of sediments and an increase in elevation

In which horizon of soil profile is prevent material usually found