What are the names of these?

Which would be the most useful source of evidence to support mcneill's contention?

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?