Which mechanism affected the gene pool of the immigrants that entered the united states through ellis island?
- genetic drift
- gene flow
- gene mutation
- natural selection

What is the primary goal of human communities?

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Beth’s hygrometer is reading a temperature of 30 c and a relative humidity of 65%. the humidity in the air is?