input: OPTIONS:
- rocks
- soils
- metal
- rivers
- wood
- deserts
- erosion
- water Now, answer this question: Fact 1: Rocks interacting with wind over long periods of time causes weathering. Fact 2: Most sands are weathered fragments of quartz. Given the two facts above, what interacting with wind over long periods of time results in sand?
A:
output: rocks

input: OPTIONS:
- friction
- conversion
- mitosis
- loose soil
- tremors
- Movement
- crust
- waves Now, answer this question: Fact 1: Faulting of rock in Earth 's crust causes earthquakes. Fact 2: Earthquakes and tremors are common in Yellowstone. Given the two facts above, faulting of rock in Earth 's crust causes what?
A:
output: tremors

input: OPTIONS:
- radiation
- magnets
- hydrogen and oxygen
- gases
- carbon dioxide
- food and shelter
- sunlight
- Solar energy Now, answer this question: Fact 1: Aplant requires nutrients to grow. Fact 2: Carbon dioxide is a plant nutrient. Given the two facts above, what do plants require?
A:
output:
carbon dioxide