Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

[Q]: Matter that mechanical wave energy can only travel through is medium.
[A]: What is the name of matter that mechanical wave energy can only travel through?


[Q]: Terrestrial biomes are associated with land, while aquatic ones are associated with water.
[A]: Terrestrial biomes are associated with land, while aquatic ones are associated with what?


[Q]: Amphibians may attract mates with calls or scents.
[A]:
Amphibians may attract mates with what?