"Recombination" and "Genetic drift" are the two main sources among the following choices given in the question that lead to increased genetic variation. The correct options among all the options that are given in the question are the third and the fourth options. I hope the answer has helped you.
Answer:
Etest
Explanation:
The Etest is used for sensitivity testing particularly for anaerobic microbes. In the test, the agar medium in a single plate is streaked in three different directions with the microbe under study.
The plastic Etest strips are arranged on the surface of the medium in such a way that they appear radiating out from the center of the plate. Each of the plastic Etest strip serves as source for different antibiotics. The plate is incubated to allow the elliptic zone of inhibition to appear which in turn are used to determine the MICs.
Because the air freshener is being released out in to open, so it spreads everywhere.
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They are thought to share common ancestors. I think this is the right answer.
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Do stones for her drains and little stoppers to keep leaves and dirt from entering the water that goes to diff plants and sewers