Exam 3 - Review - Chapter 21

Enrichment- fertilization of water by _______ nitrogen and phosphorus.

Green Chemistry: Also known as _________.

•Urban runoff is ______.

•One approach of green chemistry is to find new ways to _____________.

Water in an oligotrophic lake contains a ____ level of dissolved oxygen.

______are organic chemicals that have a high vapor pressure at ordinary room temperature.  

____: Excessive amounts of suspended soil that settle and accumulate on bottom.

___: Pollutants that enter bodies of water over large areas rather than being concentrated at a single point of entry. 

____ of water pollution in rivers is from agriculture.

Thermal pollution: Occurs when ___ produced during industrial processes is released into waterways.

Pollution from watershed results in _____ area in Gulf of Mexico.

As BOD _____, Dissolved Oxygen (DO) ________.

_____: Contaminants that contain elements other than carbon.

•Sewage treatment is ______.

Sewage: The release of wastewater from drains or sewers (contains disease-causing agents).

Clean Water Act addresses pollution that goes into the ____:

____: Water pollution that can be traced to a specific origin.

Amount of oxygen needed by microorganisms to decompose biological wastes.

•______ is leading source of water pollution in U.S.