Question: Fact 1: Biofuel is used to produce electricity by burning. Fact 2: Biofuels can reduce the greenhouse effect. Given the two facts above, what reduces greenhouse effect?
OPTIONS:
- Fully cooking the oysters
- Something made from fermented ricce
- fuel
- reusing materials
- gas
- some electricity production
- evaporative cooling
- cells
Answer: some electricity production

Question: Fact 1: Exercise has a positive impact on a human 's health. Fact 2: Sports is a good form of exercise. Given the two facts above, what have a positive impact on a human's health?
OPTIONS:
- sweating
- nutrients
- tuna
- animals
- hormones
- food
- clams
- sports
Answer: sports

Question: Fact 1: Air pollution can cause the pH of soil to decrease. Fact 2: Compost balances the pH of soil. Given the two facts above, what balances the effect of air pollution in soil?
OPTIONS:
- wind
- rubber
- batteries
- watershed
- salinity
- Earthworms
- compost
- acid
Answer:
compost