Answer:
Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.
Nucleotides - they are molecules present in cells and are formed by nitrogenous bases
First one is digestive system
second one is lion fish
i dont know the third one. im sorry
Answer: I think it id b But im not positive
