Question

Write an essay in 150-200 words about the water resources. Cover the points given
below What are the sources of water?.
sources of fresh water, Steps for conservation of water
conclusion​

Answer 1

Answer:

Water resources are sources of water that are useful or potentially useful to humans. Uses of water include agricultural, industrial, household, recreational and environmental activities. Fresh water is a renewable resource, yet the world’s supply of clean, fresh water is steadily decreasing.

Water demand already exceeds supply in many parts of the world and as the world population continues to rise, so too does the water demand. Water being a prime natural resource, a basic human need and a precious national asset, its use needs appropriate planning, development and management.

World oceans cover about three fourth of earth’s surface. According to the UN estimates, total amount of water on earth is about 1400 million cubic kilometers (M km3) which is enough to cover the earth with a layer of 3000 meters (m) depth.

However, the fresh water constitutes a very small proportion of this enormous quantity. About 3 per cent (2.7%) of the total water available on the earth is fresh water of which about 68.7 per cent lies frozen in polar regions and another 30.1 per cent is present as groundwater. The rest is available in lakes, rivers, atmosphere, moisture, soil and vegetation

About 110, 000 km3 precipitate annually on earth’s surface. Around 60 per cent (61,000 km3) evaporates directly back into the atmosphere, leaving 49,000 km3 flowing towards the sea. At present, only 3,400 km3 are withdrawn for use and annual water use per capita among different countries of the world varies from less than 50 m3 to more than 1,000 m3.

The 2030 Water Resources Group formed in 2008 to provide insights into emerging world­wide water resources in its report ‘charting our water future’ issued in 2009 provided a candid fact based integrated assessment of the global water situation over the next two decades.

Globally, current withdrawals of about 4,500 km3 exceeded the availability of about 4,200 km3. By 2030, the demand is expected to increase to about 6,900 km3, with a slight drop in availability to 4,100 km3. Thus, by 2030, a global deficit of 40 per cent is forecast.

 

For India, the annual demand is expected to increase to almost 1,500 km3 against a projected availability of 744 km3, a deficit of 50 per cent. The report admits unavoidable uncertainties in these estimates. As an independent check, an alternative prospective merits consideration.

Explanation:

Answer 2

Water:

For all living things, water is one of the most important sources. Despite being a renewable resource, clean water scarcity is a major problem in many regions of the world. We require water for a variety of things, including food production, personal hygiene, electrical generation, fire control, and most importantly, survival.

Different Water Resource Types:

Coastal Resources:

• The atmosphere of the planet is saturated with salt.
• However, saltwater is ineffectual when it comes to sources of potable water.
• Desalination plants certainly exist, but there aren't many of them because the process requires a lot of energy.

Subsurface Water Resources:

• The groundwater in the water natural resources is arguably the most abundant source of fresh water.
• Water for the plants is provided by a portion of the water that filters down into the soil through layers of earth, clay, and rock.
• This water is unsaturated since it is in the vadose area.
• Nearly the majority of the pores in the vadose zone are air-filled rather than water-filled.

Resources for Surface Water:

• Surface water is the term for the liquid in lakes and rivers.
• This water can be used for livestock, hydroelectric electricity, recreation, industry, agriculture, transportation, and potable water.
• More than 63 percent of the municipal water supply is sourced from natural groundwater resources.
• Surface water provides 58 percent of the water used for irrigation.
• Groundwater supplies account for 58% of the water used for irrigation.

Conservation of water

Water Use with Caution:

Turn off the faucets when not in use. Water can be conserved significantly by using water-efficient home equipment like washing machines and dishwashers. Make sure you don't abuse water when washing dishes or clothes, even if you don't have any equipment.

Do not flush garbage:

Be careful not to flush little pieces of trash down the drain that require a lot of water to flush. Always discard them in the trash. Use a container filled with water to wash fruits and veggies rather than running the faucet to clean them. Water will be wasted needlessly if you leave them under the tap while the water drips down.

Verify for Leaks:

If not caught early, leaks can result in severe water loss. Therefore, regularly check for leaks in the pipes, taps, and faucets. Make sure to completely shut off the faucet or it can continue to drip.

#SPJ2