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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 major endocrine glands of the human body? The major endocrine glands of the human body are the hypophysis (or pituitary), the pineal gland (or pineal body), the
Oligosaccharides Compounds containing 2 to 6 monosaccharides units joined by a glycosidic linkage.
Abortions Abortion in dairy cattle is commonly defined as a loss of the foetus between the age of 42 days and approximately 260 days (buffaloes 300 days). It is important to d
What is the thigmotropism? The Thigmotropism is the growth or movement of the plant in response to mechanical stimuli (touch or physical contact), as when a plant grows around
DIFFERENCE S BETWEEN STRIATED, NON-STRIATED AND CARDIAC MUSCLE FIBRES - Striated Non-striat
What is Fontan Operation and Modifications ? Earlier reported to have 20 per cent mortality, it has come down to five per cent in specialized centres. In the earlier series th
Human Impact on Carbon Cycle Human activities have greatly influenced the carbon cycle. The discharge of CO 2 , into the atmosphere is steadily increasing owing to burning of
introduction of safety measures of drug administration
Cell theory exception
A cell frequently wants to secrete larger molecules than can be accommodated through the transport systems dealt with in Topic E3. Exocytoses get to the movement of proteins out of
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