Describe why some parts of Earth's surface receive more of the Sun's heat than other parts

Which of the following may one conclude from a map that shows the average ph value of rainfall in the u.s.? acid rain is a more serious problem on the east coast. acid rain falls equivalently across the continental u.s. there are more factories on the west coast. the midwest has fewer forests than the rest of the u.s.

Light sensitivity in euglena is provided by the

What is the difference between topsoil and clay?