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Biology, 10.06.2021 17:00 smcardenas02
I'm a physics teacher of 30 years. I am teaching Summer School right now and have 3 of my students "cheating" by using your service.
I have written hundreds of test questions over my career and have recently realized that your service and others like you have taken my intellectual property (test questions) and posted it with answers on your site without my consent nor with any form of compensation.
I will be checking with an attorney to determine my next move.
How can this be legal?
Jeff St. John
Corinth, TX
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Answers: 3
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To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.
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I'm a physics teacher of 30 years. I am teaching Summer School right now and have 3 of my students "...
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