Q: Fact: Earth is made of rock
Question: The crust is made of different kinds of

A: stone

Q: Fact: when sound reaches the ear , that sound can be heard
Question: Which is an example of sound reaching the ear?

A: a cello

Q: Fact: An example of creating an alternative fuel is turning plant material into fuel
Question: Which of the following is true?

A: corn can fuel public transit

Q: Fact: iron is always magnetic
Question: Which is nonmagnetic?

A:
traffic cone