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Edu-Primes
  • 9/14/2024
Transcript
00:00All living things need water. Water plays an important role in our day-to-day
00:14life. 60-75% of our body weight is water.
00:23When we sweat, we lose some of the water from our body.
00:30We should replace that water by drinking at least 8 glasses of water a day.
00:39Now let�s study about it in detail. You and I, plants and animals, need water
00:52to live. We need fresh water for drinking, bathing,
01:03washing clothes, cooking and watering plants. You know now that we cannot live without food.
01:18Most of the food we eat comes from plants. Plants need water to make their food.
01:25Plants also look clean and healthy when they get washed in water. Many land animals enjoy
01:33being in water. It keeps their bodies not just clean but cool also.
01:42Animals feel thirsty too. They drink water to quench their thirst.
01:49Some animals live in water. Water is their home.
01:54An animal whether living on land or in water needs water to stay alive.
02:02Rain is the main source of fresh water. Rain falls on the ground and collects in lakes
02:13and ponds. When it flows, it forms small streams and big rivers.
02:24These are known as fresh water bodies. Sometimes the rain water seeps through the
02:31ground and collects underground. This water is called ground water.
02:40We can reach this water by digging wells, water pumps and tube wells.
02:52We have man-made sources like dams and canals for collecting and distributing water.
03:03Water pollution All of us need water.
03:13As our population grows, we need more water. But we need pure and clean water.
03:26Today's problems are shortage of water and water pollution.
03:34Water gets polluted when we throw garbage into the rivers, immerse idles into lakes
03:44and ponds, wash clothes or bathe in the rivers, dump waste from factories, etc.
03:57We suffer from typhoid, jaundice, hepatitis and gastroenteritis when we drink this polluted
04:14water. Water purification
04:20Drinking water should be very pure. Water should be purified before we drink it.
04:33Boiling Filtering
04:42Using a water filter or water purifier, etc. are some of the methods of purifying water.
04:54Boiling is the best way to purify water. We must boil it for 15 to 20 minutes at least.
05:06There is very little fresh water available on earth.
05:11But we carelessly waste water. Water is precious. It should not be wasted.