for some reason I can't submit my typed answer but here's the screenshot
Its a nucleotide.
This is the answer because they are the basic units of nucleic acids. These nucleotides are made up of a pentose sugar, a nitrogenous base, and a phosphate group.
The answer should be c if not d
The omnivores and carnivores with die off
In the Tunica, cell divisions are parallel to the stem axis giving rise to thin layers of tissues covering the tip.