Problem:OPTIONS:
- energy
- heat energy
- electrons
- direct energy
- light switch
- neutrons
- Solar energy
- h2o

Fact 1: Completing a circuit causes electricity to flow through that circuit. Fact 2: Electricity is electrons in motion. Given the two facts above, what flows through a circuit when it is completed?
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A: electrons

Problem:OPTIONS:
- insects
- A bacteria
- smoking
- Mold
- Viruses
- amoeba
- Cold weather
- chemicals

Fact 1: Viruses cause many human diseases. Fact 2: Influenza virus causes widespread human disease. Given the two facts above, what is influenza caused by?
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A: Viruses

Problem:OPTIONS:
- Calcium carbonate
- hurricanes
- soft soil
- permineralization
- the Himalayas
- hard outer covering
- snow
- glaciers

Fact 1: The Himalayas were formed by rock folding. Fact 2: Folds are especially well defined in layered, or stratified rock. Given the two facts above, stratified rock forms what?
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A: the Himalayas

Problem:OPTIONS:
- unique
- power
- energy
- fibers
- sound
- strong
- Radio
- two

Fact 1: Atelephone is used for communication by humans over long distances. Fact 2: Long-distance telephone calls can also use radio waves or microwaves. Given the two facts above, what waves does a telephone use?
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A:
Radio