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What does nonpoint source pollution mean?

Nonpoint source pollution generally results from land runoff, precipitation, atmospheric deposition, drainage, seepage or hydrologic modification. As the runoff moves, it picks up and carries away natural and human-made pollutants, finally depositing them into lakes, rivers, wetlands, coastal waters and ground waters.

What is the method of providing water to plants other than by precipitation?

Irrigation is the artificial application of water to the soil through various systems of tubes, pumps, and sprays. Irrigation is usually used in areas where rainfall is irregular or dry times or drought is expected. There are many types of irrigation systems, in which water is supplied to the entire field uniformly.

What is an inexpensive solution to providing everyone with more fresh water to use?

Science Ch. 11

Question Answer
What is an inexpensive solution to providing everyone with more fresh water to use? water conservation
Some communities have banned communities with high level of phosphates because because excessive phosphates in lakes may begin a process that causes fish to suffocate and die.

Which country has most water percentage?


What industry wastes the most water?

Textiles and Garments. The textile industry is one of the most water-intensive industries worldwide.

Who uses most water?

According to National Water Footprint Accounts, these are the top 10 water using countries around the world:

  • China: 1.5 billion people, 362 trillion gallons annually.
  • United States: 300 million people, 216 trillion gallons.
  • Brazil: 175 million people, 95 trillion gallons.
  • Russia: 143 million people, 71 trillion gallons.

What country has the dirtiest water?

  1. Eritrea: 80.7% lack basic water services.
  2. Papua New Guinea: 63.4% lack basic water services.
  3. Uganda: 61.1% lack basic water services.
  4. Ethiopia: 60.9% lack basic water services.
  5. Somalia: 60% lack basic water services.
  6. Angola: 59% lack basic water services.
  7. Democratic Republic of the Congo: 58.2% lack basic water services.

Which river is the greatest supply of freshwater in Africa?

Water Resources

  • Lake Tanganyika – the greatest single reservoir of fresh water on the continent and second deepest in the world (UNEP, 2006),
  • Lake Victoria – Africa’s largest lake and the world’s second-largest freshwater lake, and.
  • the Nile River Basin – source of the Nile, the longest river in the world.

What is the majority of fresh water in Africa used for?

In Africa, through, the vast majority (85%) of the water used is used for agricultural purposes. Another 10% of the water is used in the household, and the remaining 5% is used in industry.

Do all countries have access to clean water?

Looking at ‘safely’ drinking water does guarantee this, although data is not currently available for all countries. It’s estimated that only 71% of the world population has access to safe drinking water. This means 29% of the world does not have access.

How much clean water is on Earth?

3% of the earth’s water is fresh. 2.5% of the earth’s fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth’s surface to be extracted at an affordable cost. 0.5% of the earth’s water is available fresh water.

Who needs clean water?

Each person on Earth requires at least 20 to 50 liters of clean, safe water a day for drinking, cooking, and simply keeping themselves clean. Polluted water isn’t just dirty—it’s deadly. Some 1.8 million people die every year of diarrheal diseases like cholera.