Biology, 05.05.2021 03:40 Itsyourgirllulu
Considerando la importancia de la biodiversidad plantea 5 propuestas de solución a los problemas económicos
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Biology, 22.06.2019 03:00
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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Biology, 22.06.2019 09:30
Laura yin suggested i contact you concerning the marketing position available at eastern arbor. i am inspired to pursue my marketing interests at eastern arbor due its reputation as a prestigious innovative and growing company in liability policies
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Biology, 22.06.2019 09:40
Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.
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Considerando la importancia de la biodiversidad plantea 5 propuestas de solución a los problemas eco...
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