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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.
Q. What are the main human diseases caused by prions? The major known human diseases of such type are the Creutzfeldt-Jacob disease (CJD), the kuru and the Gerstmann-Sträussle-
How does the odor of flower petals help pollination? The purpose of the perfume is to attract a pollinator - insect, bat, bird or whatever. The reward for the pollinator is a m
Consider an ecosystem consisting of a prey and a predator. If H is the density of prey, P is the density of predator, r is the intrinsic rate of prey population enhance and q is th
List out Points about the Traditional Food Preservation? 1. The traditional food preservation methods like drying, pickling, salting, smoking, canning and freezing have been wi
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write a comprehensive note on vitamins?
Arrange the following processes sequentially to define the translocation of food through sieve tubes. i. Unloading of sugar in sink cells (or cells of root). ii. Uptak
Cellular level - Level of body organization The next higher level of organization is the cellular level. This is really an aggregation of cells that are functionally different
Explain Adverse Effects of foscarnet Renal dysfunction often develops during treatment with foscarnet and is usually reversible, but renal failure requiring dialy sis may occu
If you have a control group for your experience, which of the following statements is true? A. The control group should be identical to each test group with the exception of one va
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