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Causes of Air Pollution
We known about the composition of atmosphere, its major and minor constituents. The composition of atmosphere has remained the same for thousands of years. However, only in the last 100 to 200 hundred years some changes have occurred and their impact on the biosphere is alarming. The major constituents of air N2, O2 and inert gases that comprises about 99.9% have not changed. But some minor and trace constituents such as sulphur dioxide (SO2), oxides of nitrogen N2O, NO, NO2 (NOx) methane (CH4) chlorofluorocarbons (CFCs) along with carbon dioxide (CO2) in burnt hydrocarbon and suspended particulate matter (SPM) have increased. You know that these are the major air pollutants responsible for the deterioration of air quality.
The structure of moulds When the four pure cultures of mould have reached a vigorous state of growth study each one with a hand lens. See if you can see stalks with tiny black
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State the process of metabotropic receptors Consider a system that contains two neurons and one cardiac SA node cell in a culture dish bathed in normal physiological saline. A
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#question.what are the reason that arthropodans are abundant in nature.
Events after Sperm and Egg Fusion The entry of the sperm into the egg activates the egg. The activation of egg results in two types of responses. (1) The early responses a
related words for reproductive isolation.
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