Which of these types of changes is a physical change?
A. dissolving one substance in another
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Biology, 23.09.2020 18:01 logan541972
Which of these types of changes is a physical change?
A. dissolving one substance in another
B. changing one substance into another
C. making a new substance
D. breaking apart one substance into two substances
Answers: 1
Biology, 22.06.2019 00:10
Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation
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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.
Answers: 1
Biology, 22.06.2019 18:50
What is the volume of a book that has a width of 10 cm a length that is 2 times the width and a height that is half they would remember to express your answer in keeping units
Answers: 2
Biology, 22.06.2019 20:00
What blood vessels carry blood to the heart? away from the heart?
Answers: 1
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