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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.
In biological studies which of the below is used to refer to iron-containing, oxygen-binding, conjugated protein complex present in sarcoplasm of muscle cells? a) Myelin b)
Which is the kind of gamete (for a given trait) produced by a dominant homozygous individual? What is genotypical proportion of these gametes? And what about the recessive homozygo
D i se a se s of Skin Der m a t i t i s Dermatitis is the inflammation of dermis and epidermis resulting in pain on palpation and erythema. E t iolo
Morphology: It deals with external forms, structure and the relative position of various organs of living beings. Morphology is a branch of bioscience which dealing with the study
What is Isonietric Exercise in dynamic auscultation ? Can be carried out by doing handgrip exercise which is sustained over 20-30 second. It results in transient increase in SV
Infective Endocarditis It is an infection of the endocardial surface with micro organisms present in the lesion. The endocardium is contagions with the valves of the heart.
Which of the following is a false statement regarding the method of recombination or crossing-over? A. Crossing-over takes place during prophase I of meiosis B. Recombinatio
THYMU S - It is derived from the endoderm of the embryo. Structur e . The thymus gland is located in the upper part of the thorax near the heart. It is a soft, pinkish, b
Q. Plant classification according to Ancient Greeks and Romans? Hippocrates, "The Father of Medicine" (460-377 B.C.) is reputed to have been one of Democritus 's disciples. He
Measures of Evenness The maximum Shannon-Wiener index for a given number of species can be calculated as: The minimum Shannon-Wiener index for a given data set can be c
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