water pollution

4. a hole in the ground formed when water has dissolved underground rock to the point where it can no longer support the land suface
6. the contamination of natural water bodies by substances that harm organisms and the environment
8. when water leaves the aquifer, such as when it seeps into a spring
9. the positive benefits that an ecosystem provides to people
12. an underground layer of rock,sand,or gravel that holds groundwater; a source of well and spring water
14. the amount of space between particles in a substance

1. the highest point in an aquifer from which water can be obtained
2. pollution that is discharged over wide land area and comes from many different sources and locations
3. pollution that can be traced back to a single identifying incident, such as a leak in an underground storage tank or waste discharging from a factory
5. the process of separating solid matter from fluid by having the fluid pass through the pores of another substance, called a filter
7. the ease with which substances such as water move through a material
10. when water seeps into the ground and replenishes the aquifer, such as from precipitattion
11. the supply of fresh water found beneath Earth's surface in the pores of soil, sand, and rock
13. the study of geology that is focused on the distribution and movement of groundwater in the soil and rock of Earth's crust