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Questions and Answers

What percentage of water on Earth is freshwater?

  • 3% (correct)
  • 97%
  • 12%
  • 69%

What is the primary agricultural use of water?

Irrigation

Around 19 percent of total water consumption is used in industrial activities.

True (A)

Water is essential for _____ in various industrial processes.

<p>cooling</p> Signup and view all the answers

What percentage of water is used domestically worldwide?

<p>12% (C)</p> Signup and view all the answers

Name one of the leading hydropower generating countries.

<p>China</p> Signup and view all the answers

Hydropower accounts for 16 percent of the total electricity generated globally.

<p>True (A)</p> Signup and view all the answers

What major challenge is associated with increasing agricultural irrigation needs by 2050?

<p>Decreasing freshwater availability (B)</p> Signup and view all the answers

What is one recreational use of water?

<p>Boating</p> Signup and view all the answers

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Study Notes

The Importance of Water

  • Water is essential for all living things; it comprises the majority of organisms' bodies
  • Water is crucial for various ecosystems and serves as a habitat for countless species
  • Water plays a vital role in regulating the Earth's climate
  • Water shapes the Earth's surface through processes like erosion and deposition
  • Water helps dilute and degrade wastes, contributing to environmental purification

Water Use

  • Most uses, including agriculture, industry, and households, rely on freshwater
  • 97% of Earth's water is saltwater, with only 3% being freshwater
  • Two-thirds of freshwater exists as ice in glaciers and polar ice caps
  • The remaining freshwater is found underground and a negligible amount is present on land or in the air

Agricultural Use

  • Agriculture accounts for 69% of global water consumption, particularly in agricultural economies like India
  • By 2050, the global water demand for agriculture is projected to increase by an additional 19% due to irrigation needs
  • Increasing irrigation needs are likely to put immense pressure on existing water storage

Industrial Use

  • Water is crucial for industries, serving as a raw material, coolant, solvent, transport agent, and energy source
  • Manufacturing industries are major water consumers, with paper and allied products, chemicals, and primary metals being significant users
  • Industries globally consume around 19% of total water usage

Domestic Use

  • Domestic water use includes drinking, cleaning, personal hygiene, gardening, cooking, and washing
  • Population growth and urbanization have led to increased demand for water supply systems
  • Domestic water usage accounts for around 12% of global water consumption

Use for Hydropower

  • Hydropower, generated from water, is a renewable source of electricity
  • It accounts for approximately 16% of global electricity generation
  • Leading hydropower producing countries include China, the US, Brazil, Canada, India, and Russia

Use for Navigation and Recreation

  • Waterways are used for transportation of goods, particularly agricultural and commercial products
  • Water also serves recreational purposes such as boating, swimming, and other activities
  • Balancing recreational activities with public health and water quality is essential, particularly for drinking water sources

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