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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.
Habit and habitat
The goals of treating heart failure are relief of symptoms, improvement in exercise tolerance, and reduction in the number of hospitalizations, decreasing morbidity and mortality
Determine Nutritional Requirements for Space Missions? Space exploration represents a new frontier in the nutritional sciences and humans are eating in space since Cosmonaut Yu
Explain the life cycle of Nitrogen ? Nitrogen cycle: Along with carbon, hydrogen, and oxygen, nitrogen is one of the most common elements that form biological molecules. Nitr
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what animals use indirect respiration?
Dot blot is the technique for measuring the amount of one perticular DNA or RNA in the highly complex mixture. The samples are spotted onto the hybridization membrane (like nitroc
Charles Darwin was the first person to suggest that: a. the present forms of all existing species are the result of natural selection b. species have changed over long periods of t
Q. What are the hormones produced by the ovaries and the testicles? The testicles make androgenic hormones, the major of them being testosterone. The ovaries produce progestero
Major role in contributing towards motivation. Psychological factors: Depression, anxiety or phobia induced by illness, life- style changes or medication effects, may hinder
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