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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.
Types of Surgery : Tricuspid valvotomy is done as an open procedure at the end of surgery on mitral and/or aortic valve. It can be done on an arrested heart or on a beating heart
How sugar play a major role in Fermentation? The production of chemicals by fermenting several sugars is a very well-accepted science. Its utilize ranges from producing beverag
Main Components of Blood Plasma You would recall the various types of cells found in blood. The composition of human blood plasma is given in Table. The very structure of bloo
i want to online research biology projects
Describe the events which lead to the formation of (a) identical twins, (b) fraternal twins. (a) Identical twins are derived from the products of a one zygote which separa
Bacillary Dysentery: You have learnt about the diarrhoea in the foregoing sub-section, now let us take for example a child who has loose motion which contains blood and mucus
Q. How is the chromosome region where the centromere is located called, and how chromosomes classified in the relation to the position of their centromere? The chromosome regio
Ecosystems are so varied in form and structure that whatever has a distinct community of its own, can be called an ecosystem eg. A crop field, grass land, barks etc. all the ecosys
Q. What is the basic Role of Botanic Garden? A botanic garden makes us to simply enjoy the beauty and variety of nature. The pleasure of admiring turns us into good naturalists
It is a category of viruses having RNA genome and reverse transcriptase enzyme within virus cuspid.
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