STEP 3: READ THROUGH YOUR PARAGRAPH TO MAKE SURE IT MAKES SENSE
Paragraph 1
Porpoises and sharks appear to be similar in that they are streamlined, are good swimmers, and live in the sea.
R.Important differences are apparent, however, to marine biologists who study these species.
Q.For example, the shark has gills, cold blood, and scales, whereas the porpoise has lungs, warm blood, and hair.
U.From this contrast in features, the zoologist knows that the shark has the physiology of a fish.
S.The porpoise, on the other hand, is fundamentally more like man than like the shark—and it therefore belongs to the
order of mammals.
T.Armed with the knowledge that the porpoise is a mammal, the biologist can then confidently predict that porpoises have a
four-chambered heart and bones of a particular type.
When you put these sentences together in order, they make logical sense. There are no awkward transitions or phrases that seem out
of sequence.