Multicellular organisms contain organ systems. Which of the following BEST describes the organs in an organ system

What type of competition exsist between two species. turtles and fish

Wich organism obtains its energy from dead or decaying matter

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home. what is 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