What structural characteristic is seen in rna but not in dna

DNA has double strands while RNA  consists of a single strand

The structural characteristic observed in RNA but not in DNA is a single strand. RNA and DNA are macromolecules composed of nucleotides arranged in chains. DNA has double strands organized in a helical shape. RNA normally consists of a single strand which is not characteristic for DNA.

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