The speed of a mechanical wave through a medium depends on the type of medium. It also depends on the type of mechanical wave. Which statement is true? A. All waves travel at the same speed through any medium.
B. All waves travel at the same speed if no medium is present.
C. Electromagnetic waves require a medium, but mechanical waves do not.
D. Mechanical waves require a medium, but electromagnetic waves do not.

moon-letters were a method of writing invented by the dwarves. moon-letters were ordinary runes, but written in such a way that they could only be read when the light of the moon shone behind the writing. some moon-letters could be read by any moonlight, but it was possible to make the writing even more secret. more sophisticated moon-letters could only be read by the light of the same shape of moon, or at the same time of year, as when they were written. hope this !

i think   they were arguing over whether they would get info from doing it or nit was invading privacy