The potato famine in ireland in the mid 1800s can be considered a pull factor that caused people to migrate to the us true or false

What is the mercury length of time for one revolution around the sun?

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

Witch religion first gained poularity as a part of roman empire in the 4th century