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Air Pollution
Air pollution is one of the major problems created by modern man. It is estimated that about 100 million tons of waste are poured into our atmosphere each year. Wastes in the form of smoke from industry, power plants, automobiles and homes; and also due to burning of fossil fuels, spread pollution into our atmosphere. Aircrafts also release large amounts of burnt or unbumt fuel into the air. You may have seen a long trail of smoke left behind by a climbing jetliner.
The burning of coal, wood, diesel oil, kerosene, petrol etc. produces the following five categories of pollutants:
i) Carbon monoxide
ii) Hydrocarbons
iii) Particulates
Define the term - Irrigation Irrigation may be defined as the process of artificially supplying water to soil for full-fledged nourishment of the crops." In other words, it is
describe the factors which decide the broad area of scientific activity?
types, principle and working
Explain Nasal secretions and Cerumen Nasal secretions: These can destroy harmful organisms due to lysosomal activities. Cerumen (wax of ear): It traps and kills the bacteria
Explain the Parathyroid Glands The parathyroid and thyroid glands are neighbours in the neck. You would realize that parathyroid glands are the small glands that lie behind the
Important physico-chemical properties of biotin include the following: a) It forms colourless, needle shaped crystals. b) The vitamin is sparingly soluble in cold water
Describe the meaning of Continuous Cropping Continuous Cropping or Monoculture 1. The climate may favour one crop or a soil may be especially adapted to one crop. 2.
what is diffusion.
Life in Forests: Trees are the pillars of the forest upon which much of the other forest life is shaped. Associated with them, there may be more than a thousand kinds of s
phalanges
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