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When toxic substances enter lakes, streams, rivers, oceans and other water bodies, they get dissolved or lie suspended in water. This causes pollution of water bodies, which degrade the quality of water so that either becomes health hazard or unfit for use and known as water pollution.
It is defined as deterioration of physical, chemical and biological properties of water brought about mainly by human activities and natural activities which causes harmful effects on human, plants and aquatic life.
Example: Domestics sewage, waste water discharge, industrial effluents, surface runoff water into river and sea.
Explain Components of second heart sounds? The first component of S 2 is due to closure of aortic valve (A,). The second component is due to closure of pulmonary valve (P 2 ).
1. Fats promote absorption of fat soluble vitamins like vitamin A, D, E and K. Patients of cystic fibrosis often absorb fat poorly and are at-risk for fat-soluble vitamin deficienc
You have discovered that a single protein in two different cell lines is significantly over expressed in one of them. The proteins are identical, yet Northern blot analysis has dem
Life cycle of Filarial worm Filariasis : It is popularly known as elephantiasis. It is caused by a nematode parasite, wuchereria bancrofti, and W.Malayi. Parasite : Wucher
Explain Sodium alginate Sodium alginate helps in aiding cloud retention and inhibits clarification in orange squash and crush. It has been used as the most efficient stabilizer
Explain the Chemical Methods for Control of Microorganisms? Different chemicals can be used which can act as disinfectant, antiseptics or even chemical sterilants. These are:
Humans have selectively bred many radically different domestic animals(e.g., St. Bernard and Chihuahua dog breeds). Does this activity result in evolution? why or why not?
Features of Estuaries The physicochemical properties of the estuaries have large variation in several parameters and this often creates stressful environment for organisms. T
Simple sedimentation: The process of removal of suspended, colloidal impurities by allowing water to stand undisturbed in big tanks about 5m deep. Most of the suspended particl
Which of the following serves as a sensor, or as part of a sensor, that functions in a negative feedback system? A. Central thermoreceptor neurons whose peripheral terminals ar
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