Question

$( \frac{1}{2})^{3} + 3( \frac{1}{2})^{2} + 3( \frac{1}{2}) + 1$
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Answer 1

Microbes are the creatures that are so small in size that we can not see them with the naked eye. Just like bacteria, fungus, algae etc.
The study of micro-organisms is called microbiology. They were discovered by Antoine Leuvenhock in 1674