input with options: Fact 1: Mutation creates new genetic variation in a gene pool. Fact 2: Mutations Mutations are caused by random changes in genes. Given the two facts above, what creates new genetic variation in the gene pool?
OPTIONS:
- The bending of a ray of light
- passenger pigeons
- peachleaf willow
- Warm air moving into cold air
- random changes in genes
- that material's properties
- a tree falling
- By wind and rain
output: random changes in genes

input with options: Fact 1: Disease-causing microbes have a negative impact on the body. Fact 2: Microbes are also called microorganisms. Given the two facts above, what has a negative impact on the body?
OPTIONS:
- disease-causing microorganisms
- air
- water
- wind and erosion
- food
- smallest agents of disease
- exposure to cold
- influenza orthomyxoviruses
output: disease-causing microorganisms

input with options: Fact 1: Smoking tobacco decreases stamina. Fact 2: Tobacco is smoked in pipes or in cigarettes or bidis. Given the two facts above, what decreases stamina?
OPTIONS:
- water
- liver cancer
- cancer
- food
- cigarettes
- burning
- toxins
- exercise
output: cigarettes

input with options: Fact 1: Arefrigerator is used for keeping food fresh for a long period of time. Fact 2: People consume foods that are cold from refrigeration. Given the two facts above, what used for keeping food fresh for a long period of time?
OPTIONS:
- cooled
- viruses
- Energy
- heat
- Winter
- bacteria
- cold
- phytoplankton
output:
cold