Explain why a large animal, such as a human, needs special adaptations to organs that exchange materials with the environment (such as the lungs, small intestine and kidney), but a single-celled organism does not.

life would be meaningless without memes

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