How do single-celled decomposers get energy? a. they make their own food. b. they use a process called budding, c. they feed on living organisms. d. they break down dead organisms.

The answer would be D.

A decomposer is an animal, or plant that is used to break down chemical substances. (I just looked up on google to define decomposers to be sure)

Hope this helps my friends :)

answer; the above statement is (true);

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.