Cattle depend on microorganisms in their digestive tract to digest the cellulose in their diets. the cattle and the microorganisms are .. carnivores mutalistic symbionts herbivores parastic symbionts

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