If a rock undergoes a chemical change, what is usually required in order for that change to occur? a. Freezing temperatures
b. High winds
c. Heat and water
d. Fast water currents

According to the united nations refugee agency, more than 2/3 of the world's refugees come from just five countries. which country is not on that list? a) turkey b) myanmar c) afghanistan d) south sudan

Describe the most likely weather conditions at indiana / ohio boarder

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