input: OPTIONS:
- animal
- stiff
- cold
- not protective
- unique
- dense
- linked
- warm Now, answer this question: Fact 1: Thick fur can be used for keeping warm. Fact 2: White fur is warmer than colored fur. Given the two facts above, thick and white animal coats are what?
A:
output: warm

input: OPTIONS:
- Veins and arteries.
- alleles
- Leptospirosis
- the spinal cord
- Special disposal
- an area swollen with pus
- oxygen
- organs of excretion Now, answer this question: Fact 1: Organs of excretion make up the excretory system. Fact 2: Urinary system Excretory system removes waste and toxic substances from blood. Given the two facts above, what removes waste from the blood?
A:
output: organs of excretion

input: OPTIONS:
- Greenhouse gases
- Organic compounds
- vehicles
- Pollution
- non-sustainable
- chlorofluorocarbons
- Conifers
- an engine Now, answer this question: Fact 1: Burning fossil fuels increases the carbon in the atmosphere. Fact 2: Fossil fuels are not sustainable fuels. Given the two facts above, what sort of fuel burning puts carbon into the atmosphere?
A:
output:
non-sustainable