Env Sci 3rd 9 week exam

A bacterium, virus or parasitic worm that causes disease.

• aquifer

• nonpoint-source pollution

• pathogen

• biomagnification

Which of the following is an example of point-source pollution?

• Leaking septic-tank systems

• Precipitation containing air pollutants

• Water runoff from city and suburban streets

• Oil and gasoline from personal watercraft

An artificial lake created by building a dam is called a ...

• recharge zone

• aquifer

• watershed

• reservoir

The process that includes filtration and chlorination.

• Water purification

• Desalinization

• Wastewater

• Potable

The process by which nutrients increase in a lake while oxygen levels decrease

• Artificial eutrophication

• Recharge zone

• Biomagnification

• Point-source pollution

An underwater rock formation that holds water is a(n)...

• watershed

• reservoir

• aquifer

• dam

Polluted groundwater is difficult to clean because

• groundwater is deep in the ground and dispersed through large areas of rock

• pollutants cling to the materials that make up the aquifer and contaminate the clean water

• the recycling process of groundwater can take hundreds or thousands of years

• All of the above

Freshwater is a limited resource because

• most water is polluted

• most surface water contains salt

• it is controlled by powerful governments

• dams have limited the flow of fresh water

A process by which increasing amounts of toxins are stored in the bodies of organisms as toxins move up the food chain

• Artificial eutrophication

• Pathogen

• Watershed

• Biomagnification

Which of the following is one way a person can conserve water?

• Take a long bath instead of a shower

• Wash laundry in small, partial loads

• Use a low-flow shower head to take short showers

• Water the lawn daily and at mid-day