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Why do organisms need water?
Organisms need water for the following reasons:
(i) All cellular processes need water as a medium. Usually, the reactions that take place in our body or within the cells occur between substances that are dissolved in water.
(ii) Since most of the substances are transported in a dissolved form, water is necessary.
Use of Fire Extinguishers : We know that one type of fire extinguisher cannot serve the purpose on all kinds of fire. In this subsection you will study about the use of different
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Food Borne Diseases: If the food handler, like the cook, suffers from some infection and is not careful about washing his hands after defecation, the germs or eggs of worm
Sterilizing water by boiling The presence of tiny living plants and animals makes water inappropriate for drinking. Such forms of life can only be seen by a microscope. We can
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INTRODUCTION : You have studied about the hazards of electricity in Unit 11 of Block 3. You have learnt that most of the electrical accidents like shock, fire, etc. occur often du
What are 6 types of neuroglial cells?
Water pressure changes with depth Use the funnel and manometer which you made in the last experiment. Fill a tall glass jar or pail with water. Calculate the pressure just belo
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