Devry SCI204 week 5 quiz (All correct)

• Question 1. Which of the following contains the least amount of water?

Oceans

Polar ice caps and glaciers

Accessible freshwater

Total freshwater

Saltwater seas

• Question 2. Which of the following leads to increased inputs of phosphorus into waterways?

The use of crop rotation in agriculture Forest fires

The combustion of fossil fuels

The use of chemical fertilizers in agriculture

Condensation and precipitation

• Question 3. Pollution includes

dumping detergents into streams, causing fish kills

spraying with DDT, lowering the eagle population

releasing gases from coal combustion, causing acid rain

allowing fertilizer runoff from cropland

All of the above

• Question 4. A major water related health problem in developing countries is that

groundwater is usually contaminated with human waste

groundwater is usually contaminated with industrial wastes.

groundwater is not available

surface waters used for water supplies are often contaminated with human wastes

surface waters are contaminated with industrial wastes

• Question 5. The best way to reduce the pollution of agricultural fertilizer runoff from farm fields is

to treat the water before it reaches streams or rivers

to reduce the amount fertilizer leaving the farm fields

to add chemicals into the rivers and streams that neutralize the fertilizers

to raise crops in the rivers and streams that use the fertilizers

None of the above

• Question 6. According to the Environmental Protection Agency, the greatest current water pollution challenge in the United States is illustrated by

sewage-treatment effluent

agricultural runoff

fluids released from oil wells.

discharge of substances from factories

household waste

• Question 7.  The dead zone in the Gulf of Mexico is primarily the result of

nonpoint sources of pollutants

point sources of pollutants

a natural cycle related to cold ocean currents

industrial pollution by oil refineries in the New Orleans region

sewage dumping into the gulf waters.

• Question 8. As world populations increase,

the greatest increases in water demands will occur in the developing world

water demands will nearly double in the developing world

irrigation demands for water will nearly double

agricultural demands will increase in developed countries

All of the above

• Question 9. The impact of global warming on the water cycle is expected to produce

more precipitation

fewer droughts

fewer hurricanes

greater agricultural productivity in currently water-stressed regions

the water cycle will drop.

• Question 10. The world's largest multi-purpose Hydro Electric Power Plant (HEPP) is on The ________.

Yangtze River in China

Mississippi River in the USA

Nile River in Egypt