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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.
Q. How are solutions classified as per to their comparative tonicity? Comparative to another, a solution can be isotonic or isosmotic, hypotonic or hyposmotic or hypertonic or
Casein is the main protein in milk. There are three types of casein, one of which is beta casein. Beta casein comes in two main variants called A1 and A2. The order of amino acids
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Question 1 List the cells and organs involved in immune system. Explain the role of thymus in development of T cells. Add a note on recognition of self antigens by immune system
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