In a series of undisturbed rock layers where shale lies between sandstone below and limestone above, the a. limestone is youngest c. sandstone is youngest b. shale is youngest d. beds are all the same age

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