Good example of naturalselection

Reference no: EM13529422

Which of the following is NOT a good example of naturalselection?

a. The increase in herbicide resistanceamong weeds on farms that use herbicides.
b. An increase in felineobesity over the last 2 generations due to gradually increasing fatcontent in cat food in the 90's and 2000's.
c. A decrease in allelicfrequency of brown rodents when an unusually snowy winter hits LasVegas, turning the desert white for months.
d. The increased percentageof drug-resistant microorganisms in patients being treated withdrugs.

Reference no: EM13529422

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