How are mutations essential to evolution?

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

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