As the rate of cooling increases the size of the crystals that form
a. decrease
b. increase

Atown is built on the banks of a small lake on the edge of a desert. after some time, the townspeople discover that water from the lake has become too polluted to use. describe one way that the lake may have been contaminated by the actions of the townspeople, and explain how the townspeople can remediate this problem.

If a population is growing quickly in a small area then what must increase as well

The layers of earth are based on what two sets of characteristics?