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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.
Platyhelminthes (Flatworms) - Regeneration in Invertebrates Between flatworms the turbellarians, (mostly fresh water species and fresh water and terrestrial triclads) routinel
Response to Flooding Prolonged flooding or water-logging creates anaerobic conditions for the sub-surface parts of the plant and synthesis of alcohol dehydrogenase (ADH) helps
advantages and disadvantages of protozoa
Marine oils These oils typically contain large amounts of long - chain omega-3-polyunsaturated fatty acids, with up to six double bonds and they are usually rich in vitamins A
Why is not Mendel's second law always valid for two or more phenotypical traits of an individual? Mendel's second law, or the law of the independent assortment, is valid for g
Various structures are seen in two-dimensional planes; hence mental conceptualization is still required because the heart is three-dimensional. Now, newer technology has evolved
what si tubal pregnancy ,
ESR and CRP are elevated in almost all patients of arthritis and carditis and rarely in patients with chorea. ESR should be repeated periodically as it is useful in following the c
Q. Atrial Fibrillation or Flutter? Transient atrial fibrillation or flutter is seen frequently and can be associated with CAD, rheumatic heart disease, thyrotoxicosis, or myoc
What is the difference between ectoparasite and endoparasite? Ectoparasites are parasites that explore the external surface of the host (as, for example, mites that parasite th
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