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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
The Ptolemaic System: The theoretical n'mdel of the universe given by the Greeks had a stationary Earth at its centre, around which the Sun, the Moon and the planets moved in c
types, principle and working
Define the Type of Macrophages Macrophages are of two types: a) Fixed types, and b) Wandering types
How soap acts towards fat Prepare another jar with warm water and oil just as you did in the experiment above. This time add about half a cup of either liquid soap or strong so
Disposal of Chemical Wastes : We shall deal with some commonly occurring chemical wastes. If you need to know more details covering the disposal of a wide range of chemicals, you
Describe the factors which decide the broad area of scientific activity?
Explain Transport - Functions of Plasma Proteins Hormones and several other small molecules travelling in the plasma would themselves get filtered in the renal glomeruli and ge
Explain Automaticity - Properties of a Beating Heart Take out my heart from my body and it will still go on and on beating. How true! Even a completely denervated heart eom the
what comes first? egg or chicken?
What is the structure of the urinary bladder? The bladder is composed of four layers of tissues. The outermost serous membrane is a thin membrane lining the closed cavities of
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