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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 the difference between asexual and sexual reproduction
Q. Is the upward move of warm air good or bad for the dispersion of pollutants? An upward movement of warm air is a natural method of dispersion of pollutants. The air near the
Cilia and flagella share a common structure, with a microtubular core which has a 9+2 organization with nine paired doublets of microtubules surrounding a central pair to form the
Describe Austin Flint Murmur in heart dieases? The AR jet may impinge on the undersurface of the anterior leaflet of the mitral valve and push it up, thus creating a relative M
Why Protein requirements of athletes get increased? Protein requirements of athletes, particularly those engaged in strength and power events, may be increased above those of s
Phycomycosis (zygomycosis) Zygomycosis (previously known phycomycosis) involves fungi belonging to genera Mucor, Rhizopus, Absidia, Entomophthora, Mortierella and Basidiobolou
Explain Atrial Switch Operation ? The hospital mortality reported varies between 0 and 15 per cent. Late survival is worse for TGA with VSD compared to simple TGA. 15 year surv
the mass number is used to calculate the number of _________in one atom of an elemement. In order to calculate the number of neutrons you must subtract the _______from the ______.
What is a population? In Biology a population is a set of individuals of the similar species living in a given place and in a given time.
Define the Spray Drying Method? Spray drying is a unique drying process since it involves both particle formation and drying. It is most suitable for drying of liquid foods suc
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