Match the organs necessary with pregnancy to their functions.
Amniotic Sac
Umbilical cord
Placenta
Uterus

Which property is used to identify the origin of an igneous rock? color density hardness crystal size

Which process can increase the rate of greenhouse gas emissions into the atmosphere in response to a decrease in albedo

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