A factory uses lake water as a system coolant, then returns the water, causing thermal pollution. Why is this a problem?

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

This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.

Water diffusing through a semipermeable membrane is called