You cant answer this without looking at the diagram. sorry.
Each DNA strand within the double helix is a long, linear molecule made of smaller units called nucleotides that form a chain. The chemical backbones of the double helix are made up of sugar and phosphate molecules that are connected by chemicals bonds, known as sugar phosphate backbones.
Hope this helps
Answer:
The nucleus contains the protons and neutrons which takes up most of the mass of the atom.
The answer is true. These are all signs of communication.
