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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 about Skeletal system Skeletal system provides framework to the body; supports the soft tissues; protects delicate organs. The skeletal system is made up of bones an
What is Implant therapy Successful implant therapy requires systematic thorough and meticulous planning to determine the ultimate prognosis and end result that will satisfy th
Describe two differences among green algae and plants. Algae lack tissue differentiation and have no true roots, leaves and stems. The gametangia of algae are single-celled; th
1. In modern blimps, the gas of choice used to inflate them is helium rather than hydrogen. Hydrogen would be lighter, but helium is safer. Compare and contrast the atomic structur
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What are intraspecific and interspecific ecological interactions? Intraspecific ecological interactions are those among individuals of the same species. Interspecific ecologic
Founder effect The difference in gene pools amongs an original population and a new population founded by one or a few individuals randomly separated from the original population,
Which type of reproductive structure has a better chance of survival if there was a sudden temperature change in its environment?
Parenchymal Inflammation Parenchymal inflammation can be due to infectious diseases or acute bronchitis or pneumonia discussion will be mainly on pneumania in the following t
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