Which statement describes compounds?

Compounds are made of one type of atom.

Compounds cannot be represented by models.

Compounds are represented by chemical formulas.

Compounds cannot be broken down into simpler forms.

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line