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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.
rRNA (Ribosomal ribonucleic acid) is the RNA part of the ribosome, the cell structure which is the site of protein synthesis in all living cells. The Ribosomal RNA provides a mecha
Isomer : Existence of different compounds having same molecular form but different structural forms.
Sublimation is the process by which solid water changes directly to vapour phase without passing through the intervening liquid phase. The gradual disappearance of flakes of ice
What name is given to the mental processing of sensory information?
what is the classificatin of phylum protozoa with orders
Name the hormones produced by (a) the testes, (b) the ovaries. (a) The testes produce testosterone. (b) The ovaries produce oestrogen and progesterone.
How have prokaryotic cells given origin to aerobic eukaryotic cells and to photosynthetic aerobic eukaryotic cells? As per to the most accepted hypothesis aerobic eukaryotic ce
Explain about the Smoking - methods of food processing? Smoking was known as a method of food preservation at an early date. Foods are exposed to smokes by burning some special
Pre-operative Nursing Care of a Child with Cleft Lip We shall begin with pre-operative nursing care and then focus on post-operative Disorders care. As you know that initial
Q. Of which type of defense cell do viral infections stimulate the multiplication? The main leukocytes that generally participate and multiply in the defense against viral infe
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