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It is the process of separating colloidal and suspended impurities from water by passing it through a porous bed made of fine sand and other proper sized granular materials. Filtration is carried out in a sand filter. It consists of a top thick layer of fine sand, placed over coarse sand layer followed by gravel. Water comes from the top.
Small micro-organisms present in sand voids decompose organic matter and remove some of the biological impurities.
FUNCTIONS OF SKIN - Skin performs various diverse functions, that is why it is called "jack of all trades". 1 . Protection - The skin protects the internal soft or
Q. Treatment of angina pectoris? Proper and careful treatment of the underlying cause (usually dyslipidemia, advanced atherosclerosis or sever chronic hypertension) is imperati
how do flatworm and round worms respire?
Sertoli cells are found in: 1. ovaries and secrete progesterone 2. adrenal cortex and secrete adrenaline 3. seminiferous tubules and provide nutrition to germ cells 4.
The reproductive system of house fly: In houseflies seperate male and female organisms are present. Male housefly reproductive system. The male hothe reproductive syste
hpw many neurons do we have?
How Ignorance and Poor Socioeconomic cause PEM? Status Improper childcare, either as a result of lack of knowledge or lack of time for mother, could also contribute to the onse
Xerophytes Xerophytes are sometimes loosely defineri as 'plants of dry habitats'. But others have defined xerophytes as 'plants which grow on the substratum that usually beco
why is epidermis peeledsuggest why a marine amoeba does not have a contractile vacuole
Define Nutrient Requirements during Emergencies? The nutritional requirements of the people do change during conditions of unforeseen stress and/or any calamity. Certain recomm
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