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149 questions · auto-graded multiple-choice test.
People obtain ground water through hand pumps and wells.
Rain is the source of water on earth. And about $71\%$ of the earth’s surface is covered with water. Though, heavy rainfall is the source of water, not for water shortage.
Snow and ice are frozen while water vapour is in gaseous state. Water from lake and river are in liquid state.
Worlds Water Day is observed on $22$ March every year.
Most of the water present on earth is not fit for consumption by us. Sea and oceans contain salty water which cannot be drunk. Even most of the fresh water is frozen as ice in glaciers and polar regions.
Hence, we are left with limited amount of water from lake, river and under the ground.
$95\%$ of the Earth's water is stored in its oceans, from where the water cycle starts.
Year $2003$ was observed as the International Year of Freshwater to make people aware of this dwindling natural resource.
Earth appears blue because $81\%$ of the earth’s surface is covered with water.
The Earth has been blue for over $4$ billion years because of the liquid water on its surface.
There is only one known planet with permanent bodies of liquid water at its surface: ours.
Earth sciences allow us to explain why the Earth has almost always been blue: it's neither too warm nor too cold.
The total earth's surface covered by water is $71\%.$
World Water Day is an annual United Nations $(UN)$ observance day held on $22$ March that highlights the importance of fresh water.
The day is used to advocate for the sustainable management of freshwater resources.
Level of water is water table.
The total amount of fresh water available for use is about $0.006\%$ of the total water present on earth as about $97.4\%$ of the total water on earth is in seas and ocean and $2\%$ water is present in the form of glaciers and in polar ice caps.
Rain is the source of water on earth. And about $71\%$ of the earth’s surface is covered with water.
World Water Day is celebrated on $22$ March every year to attract the attention of everybody towards the importance of conserving water.
An ambitious plan to save the river Ganga called the Ganga Action Plan was launched in $1985.$
It aimed to reduce the pollution levels in the river.
The percentage of water in the human body is $70\%.$
Different parts of the body contain different percentages of water and the average $≈70\%.$
$22$ March is celebrated as the World Water Day.
These uses ordinarily include drinking, personal sanitation, washing of clothes, food preparation and personal and household hygiene.
According to the World Health Organization $(WHO),$ between $50$ and $100$ litres of water per person per day are needed to ensure that most basic needs are met.
The amount of water recommended by the United Nations for drinking, washing, cooking and maintaining proper hygiene is a minimum of $50$ litres per person per day.