Q: Fact 1: Darkness has a negative impact on photosynthesis.  Fact 2: Plants use photosynthesis to make food.  Given the two facts above, what negatively affects plant life?
A: darkness

Q: Fact 1: Tidal energy can be used to produce electricity.  Fact 2: Electricity is electrons in motion.  Given the two facts above, what can tidal energy be used to produce?
A: electrons in motion

Q: Fact 1: Cancer genes can be inherited.  Fact 2: An inherited mutation is a mistake in the gene.  Given the two facts above, what can some genes be?
A: mutated

Q: Fact 1: Landfills have a negative impact on the environment.  Fact 2: Most municipal trash is disposed of in such landfills.  Given the two facts above, what mostly has a negative effect on the environment?
