The evolutionary species concept defines a species as: A. a group of populations that have shared a past and will have a shared future B. reproductively isolated populations C. smallest monophyletic taxa D. morphologically similar populations

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.