How many amino acids must be obtained in the diet because they cannot be made by the body? 2
5
10
20

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

links? do you have a link? i don't see anything?