The correct answer would be D) An observation that has a number associated with it.
I'm sorry but can you be a bit more specific on these following observations?
Answer:
two strands of nucleotides
Explanation:
nucleotides are made up of suger, a phosphate, and a nitrogen base The sugars and phosphates make up the ''handrails'' or ''backbone'' however you wanna say it and they are held together by covalent bonds.
Answer:
With a cold comes inflammation of the structures around the vocal cords. With the inflammation comes swelling of those structures. Thicker vocal cords vibrate more slowly and give a lower pitch.
