What qualities encompasses an excellent office manager?

What occupation did muhammad have before the first revelation

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

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