In a litter of 8 puppies,2 have all brown fur,2 have all white fur, and 4 are mixed color. what fraction of puppies have all brown fur

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

Hector is back from his morning run and is feeling light-headed because his energy is depleted which food item will provide him with a quick source of carbohydrates

This is the interaction of two organisms where one is and the other is neither nor harmed.