To support his hypothesis of continental drift, Alfred Wegener did NOT use

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

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

Which feature of a human community is similar to a niche in a biological community