WATERWater is an important natural resource which is essential forall living beings.It is essential for the existence and survival of plants andanimals.We all use water for drinking and other household activitieslike washing, bathing, cooking, cleaning and so on.It is also used for irrigating the fields, generating electricity.
IMPORTANCE OF WATER FOR ANIMALSAll animals drink water. This helps them in digesting theirfood.The nutrients present in food get dissolved in water and thishelps their bodies to absorb the nutrients.The animal body also produces waste materials. Some ofthese wastes get dissolved and are excreted in the form ofurine and sweat.
AQUATIC ANIMALSWater bodies like rivers, lakes and seas are natural habitatsfor many animals.Animals living in water are called aquatic animals.Fish, whales, sea-horse, octopus and prawns are some of thecommon aquatic animals. These animals cannot live outsidewater.
AMPHIBIOUS ANIMALSThere are some other animals like frog, toad and salamanderthat can live both on water and on land.Such animals are called amphibious animals.
IMPORTANCE OF WATER FOR PLANTSPlants require various nutrients for their proper growth.These nutrients get dissolved in water present in the soil.Plants absorb water from the soil with the help of their roots.This water, then, transports these nutrients to various parts ofthe plant.Plants also use water for preparing their own food by theprocess of photosynthesis.Plants require water for germination of seeds.
AQUATIC PLANTSWater is a habitat for many plants. We call such plants as aquaticplants.Water lily, lotus, water hyacinth, duckweed, water lettuce andhydrilla are some examples of aquatic plants.
GROUND WATERAbout 97% of water is present in seas and oceans. Theremaining 3% water is present in rivers, ponds, lands, streams andglaciers.A small part of water, from earth’s surface, seeps into theground and is trapped between underground rocks. This is calledground water.Earlier, people used to fetch water for their daily needs fromrivers, lakes or wells.Even now, in some areas, where there is no system of supplyingwater through pipes, people depend on natural sources of waterlike rivers or ponds.
WAYS OF LIFTING GROUND WATERGround water can be drawn out in many ways. Stepwell
WATER SUPPLYNowadays, there is a well-planned water supply system thatsupplies water to homes and offices in the cities,Such a system is also in use in m any villages.In such a system, it is the river water which is usually purified bya series of processes to make it fit for drinking.This purified water is then sent to homes and offices through anetwork of pumps and pipes.
All About AmphibiansThe word amphibian means two-lives. Amphibians spendtheir lives in the water and on landAll amphibians begin their life in water with gills and tails.As they grow, they develop lungs and legs for their life onland.