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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
Explain the Discovery of Cell Let us study here about the scientists who played a pioneer role in discovering the basic component of any living organism -the cell. Robert Hooke
Water: We all know that safe drinking water is essential for good health. Many of the diseases in our country are due to lack of supply of safe drinking water. ~nfortunatel~
Anthropological Evidence Modern humans arose at a time when the Earth was going through a very cold and icy period called the Ice Age, which began about 75,000 years ago and
Use of natural resources: you studied about various natural resources such as land, water, soil, minerals etc. You know that these resources are limited and precious. Therefore
An experiment with a bottle and cork Tightly close a liitle bottle with a cork or rubber stopper. Place the bottle in the receiver and remove some of the air with the pump.
State about the Soil Aggregation and Soil Structure In the context of soils the term 'structure' refers to the shape that the soil takes. It may exist as individual particle or
do you have a protocol propogating HSV-2 in a VERO cells
explain the parts of the microscope
Some Physical Features of the Oceans: The oceans are so vast that they stagger one's imagination. They cover more than 70 per cent of the earth's surface. The depth of ocean
To show the impact of a raindrop on soil Place a saucer or jar lid filled with soil on a piece of white paper. Fill a medicine dropper with water and hold it about a metre abov
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