What causes variations in traits such as hair color, eye color, and height? A. Alleles
B. Competition
C. Fitness
D. Offspring

Wht happens as electrons in the electron transport chain release their energy

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

How does the nervous system affect the excretory system?