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methodology is the science that Studies inter- relationships between the various components of air natural cycles geological movements of the earth and climate it includes the study of Storms , clouds,
rainfall , Thunder , lighting etc depending open the study...
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Vaccines are made by taking viruses or bacteria and weakening them so that they can't reproduce (or replicate) themselves very well or so that they can't replicate at all. Children given vaccines are exposed to enough of the virus or bacteria to develop immunity, but not enough to make them sick.
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actually I have taken fron my brother's book is this answer is right
it's help you
but have not copied from Goo gle
promise
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