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If the size of bacteria is 1 micron, what will be the number of it in 1 m length?
A. One hundred
B. One crore
C. One thousand
D. One million

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Correct Answer - D
1 micron `=10^(-6)m`
`because10^(-6)m` space is occupied by 1 bacteria.
`therefore1m` space will be occupied by
`10^(6)` bacteria=1 million bacteria

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