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Bacteria cannot be seen with naked eyes,...

Bacteria cannot be seen with naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes with the help of a microscope, which sample would you carry and why?

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A sample of curd can be taken as there are Lactic acid bacteria in lakhs of amount which can be seen with the help of microscope.
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