Q: Fact: vibrating matter can produce sound
Question: Which of the following relies on vibrating matter to work?

A: violas

Q: Fact: lack of food causes starvation
Question: A pony is living in a small barn and its owner dies and the pony is unable to fend for itself. The pony dies because

A: it required nutriment

Q: Fact: avoiding predators has a positive impact on prey 's ability to reproduce
Question: Animals are unable reproduce if they are dead or cannot find a mate, so it is in their best interest to avoid animals that want to

A: murder them

Q: Fact: the moon 's surface contains highlands
Question: The moon's surface

A:
features of variety of landscape features