What element is essential for something to be considered an organic compound? why is this element important for life? make sure to use complete sentences and write a sentence to answer each question

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

what are the options

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