Because enzymes have high specificity, fewer than fifteen are required by any organism.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above