Which type of fossil contains little or no organic material
a-imprinted in stone
b-buried in tar pits
c-encased in ice
d-encases in amber

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.