Answer: <u><em> Microevolution is defined as a change in allele frequencies in a population over time. Three mechanisms can cause allele frequencies to change: natural selection, genetic drift (chance events that alter allele frequencies), and gene flow (the transfer of alleles between populations).</em></u>
Explanation:<u><em> If i'm right Mark Me brain, give 5 stars and a thank you</em></u>
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Plates slide past - transform faults
Plates collide and crumple - mountains
Creation of Hawaiian - volcanoes
One plate sinks - subduction
Plates spread apart -mid ocean ridges
I think this is right :)
<span>I would highly recommend that a researcher use the most powerful microscope available to thoroughly and aptly research planarians and to study their intricate reproductive system as well as their patterns (if any). There are a lot of unknowns when it comes to this organism. A powerful microscope would allow researchers to explore and to analyze to the point where the unknown is known.</span>