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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 rain cycle You can reproduce the rain cycle in miniature in your classroom. Place a box of plant seedlings on the table. Place a metal tray about 35 to 40 cm above the box
What is the role of science in communication?
A stone seems to weigh less in water Weigh a large stone on a pair of kitchen scales. Put a loop of heavy string around the stone and weigh it again suspended in a pail of wate
Explain Basophils - Types of White Blood Cells They form only 0.05% of the leukocytes. They release histamine that plays a major role in inflammatory reactions. Basophils also
PROCEDURE : Your Counsellor will be performing the following experiments. You are advised to observe the disposal methods carefully. Experiment 1: Test for studying miscibility
Obesity - Choose one macronutrient (carbohydrates) and one micronutrient (vitamins) that have some relationship to the disease. Conduct a brief web search to learn about the ro
Military Technology: Important changes were introduced in military technology. Rope and wooden stimps for horsemen were known in India before the thirteenth century. However,
Explain the Urine Creatinine Test This test measures the amount of creatinine in urine. A measurement of the serum creatinine level is often used to evaluate kidney function. U
what are conventional plant breeding and non-conventional plant breeding methods . what are their impacts in the future crop/plant production
Explain the Reflex control - Movements of Gall Bladder Reflex control: During digestion, reflex stimulation of gall bladder takes place. Entry of acid into the duodenum reflex
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