Which of the contains the least amount of water

Question

Assignment:

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

1. Oceans
2. Polar ice caps and glaciers
3. Accessible freshwater
4. Total freshwater
5. Saltwater seas

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

1. The use of crop rotation in agriculture
2. Forest fires
3. The combustion of fossil fuels
4. The use of chemical fertilizers in agriculture
5. Condensation and precipitation

Question 3. Pollution includes

1. dumping detergents into streams, causing fish kills
2. spraying with DDT, lowering the eagle population
3. releasing gases from coal combustion, causing acid rain
4. allowing fertilizer runoff from cropland
5. All of the above

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

1. groundwater is usually contaminated with human waste
2. groundwater is usually contaminated with industrial wastes.
3. groundwater is not available
4. surface waters used for water supplies are often contaminated with human wastes
5. surface waters are contaminated with industrial wastes

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

1. to treat the water before it reaches streams or rivers
2. to reduce the amount fertilizer leaving the farm fields
3. to add chemicals into the rivers and streams that neutralize the fertilizers
4. to raise crops in the rivers and streams that use the fertilizers
5. 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

1. sewage-treatment effluent
2. agricultural runoff
3. fluids released from oil wells.
4. discharge of substances from factories
5. household waste

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

1. nonpoint sources of pollutants
2. point sources of pollutants
3. a natural cycle related to cold ocean currents
4. industrial pollution by oil refineries in the New Orleans region
5. sewage dumping into the gulf waters.

Question 8. As world populations increase,

1. the greatest increases in water demands will occur in the developing world
2. water demands will nearly double in the developing world
3. irrigation demands for water will nearly double
4. agricultural demands will increase in developed countries
5. All of the above

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

1. more precipitation
2. fewer droughts
3. fewer hurricanes
4. greater agricultural productivity in currently water-stressed regions
5. the water cycle will drop.

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

1. Yangtze River in China
2. Mississippi River in the USA
3. Nile River in Egypt
4. Rhine River in Germany
5. Amazon River in Brazil