Which of the following actions causes the deposition of sand at a delta? A. river water slowing as it enters the ocean
B. salt water and fresh water mixing together
C. ocean waves transporting sand toward land
D. ocean water slowing as it reaches the coast

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