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Pollution - Environmental Pollution
Pollution refers to any undesirable change in the physical, chemical or biological characteristics of our environment, i.e. air, water and oil that may or will adversely affect humans or other species and life support systems of our biosphere directly or indirectly. A substance whose introduction into a resource damages the latter's usefulness is called a pollutant. Pollutants are grouped into two broad categories:
The non-biodegradable pollutants such as heavy metals, pesticides, move through the food chain and may get magnified to dangerous levels in higher trophic level organisms. Some of these combine with other compounds and produce toxic substances. However, biodegradable materials such as human and animal wastes, agro-based residues and fertilisers can also pose a threat if their quantities or inputs exceed the Assimilative capacity of the environment.
Needlestick/sharp instrument injuries are of major concern to health care workers. All of the significant exposures reported in the academic year 2003/04 in our Faculty, were injur
What is Lymphatic System in human biology? The lymphatic system maintains fluid balance and serves in protecting the body from disease. The primary organs of the lymphatic syst
Elaborate Proteins? Proteins: Proteins are the primary constituents of most living cells. Proteins are important components of cell membranes, and they form structures such
Q. Zonation in the ocean? The oceans play a major role in determining the climate and sustaining life on earth. Oceans help to redistribute the solar energy, through ocean curr
Q. How different are hemoglobin and oxyhemoglobin? Where is it expected to find a higher concentration of oxyhemoglobin, in peripheral tissues or in the lungs? Oxygen-bou
What is the relation between posterior pituitary gland and diabetes insipidus?
Is it possible that an X chromosome of a woman can have come from her father? It is not only possible that an X chromosome of a woman is from her father, it is certain. Every w
How the foams are formed? Formation of a foam is dependent on a foaming agent in the continuous phase prior to dispersion of gas. The foaming agent must be adsorbed at the su
Define Fat requirements in human body? There is no change in fat digestibility at altitude of
LOCOMOTION IN EARTHWORM - By contrection & relaxation of muscles waves are formed in body, generally from posterior to anterior. Setae are helpfull in locomotion. Rate of lo
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