Who would you expect to be most at risk for developing the bone disease rickets? A :Children born to mothers with dark skin, living far from the equator

B: Adults with dark skin who live close to the equator

C: Children born to mothers with light skin, living close to the equator

D: Adults with light skin who live close to the equator

How are tumors cells different from normal cells

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

Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b.passive c. facilitated d.active b.passive