Fact 1: Breaking apart rocks can cause debris. Fact 2: Hammers start breaking rock. Given the two facts above, what can cause debris?
OPTIONS:
- wind
- erosion
- flooding
- screwdriver
- spoon
- hammer
- mines
- fork

Answer: hammer

Fact 1: Playing is one way mammals and other animals learn how to behave. Fact 2: Exercise is fun if it is also play. Given the two facts above, what can teach animals how to behave?
OPTIONS:
- adding heat
- humans
- fossil fuels
- A computer
- nerves
- people
- irradiation
- exercise

Answer: exercise

Fact 1: Agenerator converts kinetic energy into electrical energy. Fact 2: And that energy is generated by burning fossil fuel. Given the two facts above, what does a generator use?
OPTIONS:
- acid
- engines
- air
- cycles
- A kernel
- water
- fossil fuel
- to move people

Answer:
fossil fuel