The decimal reduction time refers to the amount of time it takes to which of the following?
reduce a microbial population by 10%
reduce a microbial population by 0.1%
reduce a microbial population by 90%
completely eliminate a microbial population

The correct option is: reduce a microbial population by 90%

Explanation:

In a sterilization procedure, the decimal reduction time is the required time to achieve a log reduction i.e. reduce the microbial population by killing the 90% of the relevant microbial population, at the given set of conditions. Therefore, after the exposure time of 1 D, only 10% of the microbial population remains.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

i dont know it at allnow im just getting points at this pint