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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.
What is Archaebacteria ? Archaebacteria is a relatively new grouping that was created in the light of relatively recent biochemical and electron microscopic evidence. These fin
Q. What is the main risk factor for skin cancer? The major risk factor for skin cancer is solar exposition of the skin without protection against ultraviolet radiation (a poten
Q. Describe False Negaive Tests? When patients are found to have significant coronary narrowing and fail to have exercise induced ST depression, they have been labeled false ne
Determine the major demographic processes? There are five major demographic processes, which are continually at work within the population namely, fertility, mortality, marriag
Discuss in detail about the Mitochondria An important function of the cell is to derive energy from the different oxidisable nutrients, such as, carbohydrates and fats supplied
How sugar used in Flavors and Mouthfeel? In frozen desserts, sugars balance flavor and mouthfeel. Since low temperatures tend to numb the taste buds, sugars enhance flavors, th
Where are humans from
Ribo Nucleic Acid contains OH group at second carbon where as Deoxyribo Nucleic Acid lacks OH group at Second carbon.....DNA is Double standed helix whereas RNA is single stranded
What is the role of Stomach in human body? The stomach serves both to digest food and to hold it so that it can be gradually released into the small intestine. Food stays in th
Q. Illustrate Hypertrophic cardiomyopathy? It is a genetic disorder due to mutations in the gene that encodes for β-Cardiac myosin heavy chain (Localised to chromosome 14). It
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