Question

Appearance of resistant organisms in a time scale of
months and years and not centuries is mainly
attributed to
O Adaptive radiation
O Anthropogenic action
O.
Random mating​

Answer 1

Answer:

the answer is adaptive radiation (hopes this help you. thank you for the points)

Answer 2

anthropogenic action

Explanation:

excess excess use of herbicides pesticides extra as only resulted in selection of resistance variety in a much lesser Time scale.this is also true for microbes against which we employ antibiotics against eukaryotic organism or cell. hence resistance cell are appearing in time scale of months or years not centuries.