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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. Concerning their permeability how are membranes classified? Membranes can be classified as permeable, impermeable, selectively permeable or semipermeable. An impermeable
Explain Diabetic diets Diabetic diets : There are therapeutic modification in the quantity1 quality of various macronutrients particularly carbohydrates.
General characteristics of phylum
Results : Pericardiectomy used to have a mortality of 10-15 per cent in the earlier era. At present it is around 3 to 5 per cent and does not approach 0 per cent even though it
Describe in detail about the unicellular eukaryotes Animal cel1.s and many types of unicellular eukaryotes contain centrioles, which are cylindrical in structure, about 0.15 m
describe the structure of a lung in terms of covering membranes and cavities
Radiographic Examination Radiographs are an important tool to evaluate the bone levels, health and implant integrity. Annual radiographs following treatment are recommended in
Pyramid of Biomass - Ecological Pyramids The pyramid of numbers is not a very good method to use if the organisms at different trophic levels are of greatly differing sizes. T
Define Antiketogenic Effect of Carbohydrate? Presence of carbohydrates is necessary for normal fat metabolism. In the absence of sufficient carbohydrates, larger amounts of fat
LOCOMOTION IN STAR FISH - With the help of tube feet aided by fluid pressure in them. In a tube feet upper ampulla, middle podium and lower sucker present.
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