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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.
Woodland Stage - Hydrarch When the lowland has been built up to an extent where the soil is saturated perhaps only in spring and early summer, certain species of shrubs and tr
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
Q. Explain the Rapport Building? Maintaining good relationship with the client is very important in counselling. This will help you to gain trust, confidence of the client and
how pollination occurs in Salvia?
Syngamy and Triple Fusion After traversing through the stylar region, the ultimate destination of the pollen tube is to reach the female gametophyte and release the male game
Aortic Valve Repair : In, acquired AR associated with VSD and prolapse of a cusp, repair is often successful. VSD is closed and at the same time the prolapsed part o
Surgical Therapy The clinician may use a surgical approach when non-surgical therapies are not indicated or are unsuccessful. The surgical techniques are modified from those
Define Role in protein metabolism and growth? Severe vitamin A deficiency results in abnormal RNA metabolism and protein synthesis and hence interferes with growth. Hence vitam
Explain the Food preparation and Cooling - Canning? Food preparation - Preparation methods will change with the type of food. For fruit, cutting to size, washing, grading, peel
De Vega Annuloplasty : Classic De Vega annuloplasty is done using 2'0' double armed polyester suture with pledgets on either end. It starts with one of the needles passed fr
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