There are four major classes of biological macromolecules:
carbohydrates.
lipids.
proteins.
nucleic acids.
Answer: (B)
Explanation: They are asking for a comparison between light waves and sound waves.
A and C is wrong because it only says about sound waves
D only says about sound waves
E is completely wrong because they are affected differently in different mediums.
Answer:
D. I.
maybe its D, I think it might be D
tonsils are large lymphatic nodules h are located in the walls of the pharynx
