Read it! amateur astronomer and photographer nick risinger decided to try to capture an image of the entire sky. to do this, he had to travel about 60,000 miles (96,560 kilometers). with his camera, risinger took pictures from various high points in the western united states, south africa, and other key places in the world. photo shoots were timed around new moons, when nights are long and dark. eventually, he stitched 37,440 exposures together. the amazing panoramic survey of the sky was posted online in april 2011. do it! risinger was a suspended b consulted c determined d promoted

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.

What are characteristics of minerals? select 3 choices

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.