What basic ring structure is common to all steroids?

Write a paragraph explaining why the effect of mutations can vary widely - from neutral to harmful to beneficial

Which are observations about the tree on the right ,? check all that apply

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