input with options: Fact 1: Biofuel is used to produce electricity by burning. Fact 2: Energy is created when objects are burned. Given the two facts above, what is biofuel used to produce?
OPTIONS:
- disease
- chemicals
- waste
- bamboo
- engines
- sleep
- energy
- food
output: energy

input with options: Fact 1: If seeds stick to the fur of an animal then that seed will be transported by the animal. Fact 2: Burrs and some other seeds have tiny barbs that hook on to cat fur. Given the two facts above, what is transported by sticking to the fur of an animal?
OPTIONS:
- burrs
- food
- keratin
- caviar
- A virus
- fish
- eggs
- lipids
output: burrs

input with options: Fact 1: Evolution is a change in the characteristics of living things over time. Fact 2: Evolution relies on random chance acts to cause mutations. Given the two facts above, what causes changes in characteristics of living things over time?
OPTIONS:
- mutations
- science
- parents
- environment
- light energy
- news
- alleles
- animals
output: mutations

input with options: Fact 1: Mollusks live in most terrestrial, freshwater, and marine habitats. Fact 2: Clams are mollusks that live in the sea or in freshwater. Given the two facts above, where do clams live?
OPTIONS:
- The area was once underwater
- remains of prehistoric life
- Creeks
- Storm drains
- members of their own species
- the environment
- Freshwater habitats
- Ponds
output:
Freshwater habitats