Can someone help?? Explain how energy transferred to the dinosaurs (you could create a food chain as well). Explain how losing one part of this food chain will unbalance the whole ecosystem.

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!

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

What is a group of organisms that are closely related and share similar characteristics