Why are only inherited traits, not acquired ones, necessary for the process of natural selection?

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation

What is the next step in muscle contraction after the actin changes shape? (apex)

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