Why is a standard system of measurement important?

Which muscle is responsible for inhalation ?

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

Based on the data in the graphs do you think pepsin and trypsin are found in the same part of the body? explain your answer.