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Air Pollution - Environmental Pollution
The threat due to air pollution became apparent only when some severe episodes caused human casualty in USA, Britain (London) and Japan. In 1948 in Donara town of USA twenty people died and thousands became ill due to prolonged trapping of pollutants in the atmosphere emitted from steel mills and zinc smelter plants. In 1952 nearly 2,500 people died in London when the city got enveloped by sulphuric acid vapours, particulate matter and sulphur dioxide.
The most tragic episode in history occurred in December 3rd, 1984 at Union Carbide in Bhopal when approximately 36 tonnes of methyl isocyanate (MIC), an extremely poisonous gas used in the synthesis of sevin - a pesticide, escaped shortly after midnight from a storage tank and spread like mist and cloud over the city. The poison caught people in their sleep, awakening them in choking pain, terror and panic. Many got killed during sleep. It is estimated that around 10,000 people died and more than 2, 00,000 were injured. Many survivors suffer from permanent respiratory illness and impairment of vision.
lest the characteristics of Protozoa
Menstrual Cycle- Reproduction Menstrual cycles are characteristic of primates and do not occur in other vertebrate groups. The length of the cycle is highly variable, though 2
How do chloroplasts multiply? Like mitochondria chloroplasts have their own DNA, RNA and ribosomes and they self-replicate through binary division.
Do disinfectants kill bacteria? Secure various types of commercial and house- hold disinfectants. Inoculate as more culture dishes as you have samples of disinfectant and singl
Explain Crossing Over in genetics? Crossing over is when the arms of homologous chromosomes exchange segments (and therefore genes) with each other. Recall that one of the homo
What is NADP and NADPH? NADP is the abbreviation of the nicotinamide adenine dinucleotide phosphate cation, a hydrogen acceptor. NADPH is made when NADP binds to one hydrogen a
Xerophytes Xerophytes are sometimes loosely defineri as 'plants of dry habitats'. But others have defined xerophytes as 'plants which grow on the substratum that usually beco
#question.what is protostomous and deuterostomes development.
Q. What about the fluid and other nutrient intake during constipation? The fluid intake should be at least 2 litres daily. This includes fluid as foods and beverage besides wa
what is the organ of respiration in snaks
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