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81The world of microbes
by C V Singh
The world of microbes: microbes and human welfare Have you ever thought that how much useful are these invisible friends (not all microbes) of human beings. Although present everywhere where life can... published 10 months ago
74How to Make Biodiesel Fuel
by daryl2007
Global Warming is killing our planet and as what Al Gore explained its caused is from the diesel pollution. Imagine how much pollution it covers the earth from 2 million cars running each day, and not to... published 6 months ago
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