The sun unevenly heats the minerals in a rock, causing the rock to break. this is an example of

The most common economic system in the world is aclosed economy. command economy. mixed market economy. traditional economy.

Plants can have a positive and negative effect on the rate of weathering

Compared with the land in the highlands, the lowlands region of england a) rockier and more difficult for farmingb) the center of business and industryc)richer in coal reservesd)covered by more fertile farmland d) covered by more fertile farmland