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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
Why Rainfall is imprtant factor in active soil formation Of the various climatic elements that take part in active soil formation, rainfall or precipitation is the most importa
characteristics ot coelenterata
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
Another way to show that air expands when heated Snap a toy balloon over the neck of a small bottle and place the bottle in a pan of warm water.
Infectious diseases: Some of you may have heard about the great bubonic plague, a fatal disease of the blood, spread by fleas and respiratory secretions. It occurred in epid
2. Explain why KB has a low level of serum ketoacids? (4 points)
Describe the factors which decide the broad area of scientific activity/
Define Goitre - Thyroid Gland Goitre or the enlargement of thyroid gland is one of the critical manifestations of iodine deficiency. Iodine, as you must have realized by now, i
Explain Neutral fats Neutral fats are esters of fatty acids with glycerol and found abundantly in nature. These are insoluble in water but readily soluble in ether,
How does our body know 'what to do' Feeling, knowing, doing anything depends on special structures called nerves. Neuronal cells in the body act as various messengers according
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