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Using the hypothetical petri dishes below, calculate the difference in bacterial diversity between the
before and after samples. In these hypothetical samples, different sizes and shapes of colonies
represent different bacterial species. Colonies of the same size and shape represent the same
species.

A. -6 species
B. -3 species
C. +3 species
D. No change in the number of species

Using the hypothetical petri dishes below calculate the difference in bacterial diversity between the before and after samples In these hypothetical samples dif class=

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