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Housing:
Housing is an important component of healthy environment. Probably you are aware that housing conditions for the vast majority of people in India are not up to the standard for a healthy living. Villages have hardly any lavatories, and drainage being poor, they are sarrounded by pools of uncleangenn-infected water. As more and more people move to the cities, the problem of housing becomes acute and a large.percentage of people live in slums or on the street without shelter. Poor housing by itself does not cause disease, but it does contribute to spread of infections and ill health. A house should be sunny and well ventilated to ensure gentle movement of fresh air throughout the area. Proper ventilation reduces the concentration of micro-organisms to a safe level. Communicable diseases, such as lung infections, diphtheria, whooping cough and tuberculosis are often associated with poor housing. In closed rooms, the concentration of micro-organisms builds up rapidly and thus the risk of the spread of infection increases. ~am~ness and moisture also help in the spread of these diseases. A house should be kept free of pests such as rats, mice, cockroaches, ants, houseflies and mosquitoes because they are carriers of harmful germs.
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Uses of Benzophenone
Ground depressions in areas of Karst topography are called: Sinkholes
Softening water with chemicals Try making suds with a half test tube of hard water and a few drops of soap solution. Next boil a same sample and again try to make suds by usin
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Procedure 1 . After the dissection experiment is over the dead animals are put in disposable paper bags and the bag is sealed. Animal tissues and excreta should also be put and
three adaptations that help humans have differential survivability, and three adaptations that help humans have differential fecundity.
Explain about the Alluvial soils Alluvial soils are characterised by their extreme depth, often several hundred feet, and a grey or greyish brown colour. Their texture varies
what is the meaning of heliospere
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