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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.
Explain the Fluoride Toxicity? Fluoride is a cumulative toxin. Ingestion of fluoride 1.0-1.5 mg/L for several years may produce dental fluorosis, i.e. browning and pitting of t
Q. What is Multi-gated equilibrium radionuclide angiography? Multi-gated equilibrium radionuclide angiography (MUGA) is a very accurate method in measuring ejection fraction. R
Database Search: Once an open reading frame or the partial amino acid sequence has been pre-determined, the investigator compares sequence with others in the databases using a com
Symbiotic interaction - Biological Stress Presence of symbiotic microorganism can result in differential growth stimulation of those plants which can recognise the beneficial
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Prepared Assignments on glycolysis
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How does chewing food help to speed up digestion? Chewing reduces food to portions small sufficient to be swallowed and enhances the surface area of the food for digestive enzy
Feeding Mechanisms of Animals All animals have evolved successful methods for extracting their required nutrition from the environment. Thus we find a diversity of feeding mec
in what part of the human body aschelminthes found?
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