If you were standing at the end of a pier with a stopwatch in hand, how would you measure the average wave period of the waves that pass by? •why do successive (one after the other) waves that arrive at the beach have different heights?

Match the types of competition to their descriptions

How do cells grow and reproduce to maintain homeostasis?

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