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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.
- Highlight the issues related to diabetes mellitus. - Apply different types of counselling skills to counsel patient with Diabetes and their family members - Develop pre-req
morphological characterstics of e histolytica
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what are the unique characteristics of a flatworm
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Define requirements of Vitamin A of infants? On the basis of vitamin A ingested by breast fed infants in well-nourished communities, ICMR (1990) has recommended a daily allowan
Most of the surface water originates directly from precipitation in the form of rainfall or snow. Ground water from springs also contributes to the flow of most of the streams. The
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