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Water As A Medium Of Life

Can a fish live out of water? It will die in a few minutes, if it is taken out of water. Why is it? Fish use oxygen dissolved in water for respiration. When water pass through their gills, oxygen enters into blood vessels. Fish cannot obtain oxygen if there is no water. Lots of fish die during a drought period because they cannot get oxygen without water. ² Many aquatic organisms use water as their living environment (Habitat) e.g.:- Fish - Tilapia, Tuna Amphibian - Toad Reptile - Watersnake, Turtle Mammals - Dolphin, Whale During the Winter season, although the surface water gets frozen, water remains in liquid state under the ice layer, so that fish can survive without any harm during the Winter. Some people break these ice layers and do fishing during this season. Water acts as a medium for biological activities taking place in all living beings which live in water and land. ² Digestion of food and producing energy through reaction of glucose and oxygen and many other chemical reactions take place in a medium of water. The nutrients absorbed to the body after the digestion of food, are transported to the cells by dissolving in blood. So this process too takes place in a medium of water. vitamins, minerals, medicine are transported through our body by using a medium of water in blood #water #sea #Fish