Which of the following aquatic ecosystems is likely to have both a littoral and benthic zone? a Lake

b Open ocean

c Coral reef

d None of the above

C. Coral reef

Explanation:

Coral reefs are both found in the littoral zone which is on the shore in a tidepool and in the benthic zone which is the low level of the ocean.

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the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.