input with options: Fact 1: Cutting down trees has a negative impact on an ecosystem. Fact 2: Students take a field trip to an ecosystem to observe the homes of animals in natural habitats. Given the two facts above, cutting down trees has a what on the homes of animals in natural habitats?
OPTIONS:
- neutral impact
- deforestation
- positive impact
- no impact
- threatened
- Decrease bodily water
- massive damage
- negative impact
output: negative impact

input with options: Fact 1: Amphibians are the first true tetrapods, or vertebrates with four limbs. Fact 2: Bullfrogs eat other amphibians. Given the two facts above, these belong to the class of creature that were the first true tetrapods:?
OPTIONS:
- millipede
- crabs
- four limbs
- bullfrogs
- gastropod
- a fish
- warm-blooded
- insects
output: bullfrogs

input with options: Fact 1: Behaviors that improve fitness increase through natural selection. Fact 2: Adaptation is the result of natural selection. Given the two facts above, behaviors that improve fitness increase through what?
OPTIONS:
- kinetic energy
- Animal survival
- increases
- hydration
- Riding a bike
- competition
- adaptation
- insulation
output: adaptation

input with options: Fact 1: Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. Fact 2: Ethanol is another transportation fuel. Given the two facts above, what is produced by alcoholic fermentation of glucose in corn?
OPTIONS:
- peachleaf willow
- A compound that donates proton
- A cleaning fluid
- A source of electricity
- A transportation fuel
- Organic compounds
- A yeast
- Chemical energy
output:
A transportation fuel