23. How do rocks get broken down into small fragments? a. by freezing
B. by crystallization
C. by erosion
d. by weathering

Gold is not now being extracted from seawater. why not? a. it would be too disruptive to marine life to develop any marine mineral resources b. there is no gold in seawater c. we don't know how to extract minerals from seawater d. it would be too costly and difficult to separate the small amount of gold from the very large amounts of halite and other minerals

Are divergent boundaries responsible for tsunamis?

In a command economy, the majority of goods and services are provided by the