Unit 6 Water and Water Pollution Review

Water

The greatest source of water pollution in terms of total mass is 

Of the following sources of oil in the environment, the one which contributes least is 

Heat, organic wastes, and inorganic plant nutrients may all deplete dissolved _____ from water.

Humans increase the likelihood of flooding by

Desalination

Which of the following is a nonpoint source of water pollution?

In the East, most water use is based on 

The hydrologic cycle will naturally purify and recycle fresh water as long as humans don’t

Dams

Water is wasted because 

One class of pollutants that can cause a population explosion of aerobic bacteria is

Experts rate groundwater pollution as a 

Groundwater depletion can be reduced by

Throughout the world, the most water is used for

The most common reason for nonpoint source pollution to enter a watershed is

Which of the following types of sewage treatment is properly matched?

Chesapeake Bay has been quite vulnerable to pollution because it is

Which of the following uses tends to consume the smallest amount of water?

Water scarcity due to increasing numbers of people relying of fixed levels of runoff is called

In the West, most water use is based on 

For drinking water, the WHO recommends a level of ? coliform bacteria per 100 mL of water

Approximately ____% of Earth’s water is fresh rather than salt water.

The majority of the oil pollution of the ocean comes from 

One class of pollutants that can cause excessive growth of algae is

Water can be scarce because of 

Which of the following statements is false?

Overuse of groundwater can lead to 

The only effective way to protect groundwater is to 

Oxygen sag curves

Which of the following are a point source of water pollution?

Water scarcity from drying up of the soil because of deforestation or overgrazing is called

The largest estuary in the United States is 

In cultural eutrophication, game fish die from 

Sustainable use of water 

Wasting water through irrigation could be reduced by

Which of the following statements is false?

Farmers can sharply reduce fertilizer runoff by 

An indicator of good water quality would be a very low number of 

Water molecules _________ each other.

Thermal water pollution can be reduced by all of the following methods except

A body of water can be depleted of its oxygen by 

Which choice completes the sentence incorrectly?  Cloud seeding

Which of the following statements about lakes is true?

Water covers about _____% of Earth’s surface.