What three processes can a rock change from one rock to another?

What feature of cell theory is best demonstrated in the image

What abo controlling alleles could kim give her child

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