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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.
Define the neurological disorders of dysphagia? In neurological disorders, damage to cranial nerves can lead to weak and poorly co- ordinated tongue movements, which results in
A large number of integral proteins in eukaryotes do not traverse the membrane but are anchored in one or other leaflet of the bilayer through covalent attachment to a hydrocarbon
what is respiration
GONADS - They develop from the mesoderm of the embryo. The gonads are the sex glands; the ovaries and the testes. They produce ova and sperms respectively i.e. cytogenic in
Precautions to prevent from HIV To avoid HIV infection one should practice safe sex (use of condoms). Besides a few simple precautions are given for protection against HIV inf
Q. How do fishes do gas exchange? Fishes "breath" through gills, branchiae or Gills, are highly vascularized organs specialized in gas exchange under water and present in aquat
Cellular respiration Cellular respiration is more or less a reverse process of photosynthesis. During cellular respiration complex carbon compounds, especially the carbohydrat
Medical Research - Conservation of Wildlife Many animal species are used to test drugs and vaccines and to increase our understanding of human health and disease. The nine-b
In f e c tiou s Diseases Infectious diseases inflicts major economic losses as the disease spreads from one animal to other and large number of animals are affected with t
How does parafunctional habits lead to implant failure Parafunctional habits like bruxism and clenching create mechanical and biological problems due to overloading and is cons
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