11.3- Water pollution

2. water that contains waste from homes or industry.
6. when each organism stores the pesticide in its tissues and concentration of the pesticide that is passed on to the next organism in the food chain increases.
7. occurs when power plants and other industries use water in their cooling systems and then discharge the warm water into a lake or river.
9. Pollutants usually enter groundwater when polluted surface water seeps down from the Earth’s surface
10. introduction of harmful agents into water that degrade water quality and harm the organisms depending on the water.

1. inorganic plant nutrients enter the water from sewage and fertilizer runoff
3. coastal areas where excess nutrients have caused low oxygen levels.
4. comes from many different sources.
5. pollution discharged from a single source.
8. As this dies and decomposes, the dissolved oxygen is used and organisms living in the water suffocate and die