input with options: Fact 1: Cancer cells divide more often than normal cells, and grow out of control. Fact 2: Cancer is an example of a mutation in cells. Given the two facts above, what divide more often than normal cells, and grow out of control?
OPTIONS:
- white blood cells
- Most plants
- hair cells
- skin cells
- Smoking
- peachleaf willow
- mutated cells
- cigarettes
output: mutated cells

input with options: Fact 1: Lack of moisture in the air causes low amounts of rainfall. Fact 2: Rainfall contributes to, and evaporation removes, moisture. Given the two facts above, what does evaporation lower?
OPTIONS:
- less water
- dry
- heat
- clouds
- drought
- moisture
- salinity
- heat energy
output: moisture

input with options: Fact 1: Rocks interacting with wind over long periods of time causes weathering. Fact 2: Landscape is in turn altered by climate and weather. Given the two facts above, rocks interacting with wind over time cause what to be altered?
OPTIONS:
- coastlines
- ground
- landscapes
- fossil fuels
- species
- breeds
- patch reefs
- filtration
output: landscapes

input with options: Fact 1: Oxygen is essential for cellular respiration for all aerobic organisms. Fact 2: Besides nitrogen and oxygen, the atmosphere contains many, many other molecules in trace amounts. Given the two facts above, what is essential for cellular respiration?
OPTIONS:
- Veins and arteries.
- kinetic energy
- The atmosphere
- Energy.
- heat energy
- Organic compounds
- Chemical energy
- flow of electrons
output:
The atmosphere