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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.
Name the Primary and secondary minerals found in soils Minerals such as silicate clays and iron oxide, which are formed by breakdown and weathering of less resistant materials,
PITS Depressions in secondary cell wall is called pit. A pit present on the free cell wall surface without its partner is called Blind pit. It consists of 2 parts -
Explain the work of Linnaeus in animal Taxonomy? In 18th century, the work of Linnaeus and his followers (Haartman, 1751, 1764, Kolreuter, 1761-66) helped systematic to advance
Tools of lower paieolithic age Pleistocene times there were huge herds of very large mammals. Bones of such large mammals were found associated with the human fossil finds and
Q. Photosynthesis rate varies as per to the photic energy intensity. Does the same take place in aerobic respiration? What do happen to the glucose balance as a result of these var
what are the examples of parasitic plants
S a f e ty, ethical and welfare considerations Development of transgenic organisms is proceeding in an environment of intense public debate about safety, environmental impa
Explain Procedure for Temporary Mounts of Fungal Culture? (1) Observe mould culture for the colonial appearance and colour. Also observe the underside. (2) Label the clean,
What is the reason of post endodontic disease ? Either there is persistent or reintroduce intracanal microorganisms.. that means if I do improper instrumentation, improper clea
Alterations occurring in fish The skeletal muscle of fish consists of short fibers arranged between sheets of connective tissue. The connective tissue in the fish muscle is les
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