Problem:OPTIONS:
- heat energy
- pulse
- heat
- photons
- complete
- energy
- Heart rate
- electrons

Fact 1: Completing a circuit causes electricity to flow through that circuit. Fact 2: An electrical current is a flow of electrons. Given the two facts above, completing a circuit causes _ to flow through that circuit?
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A: electrons

Problem:OPTIONS:
- dangerous
- illness
- Smoking
- Mumps
- Leukemia
- parasites
- Measles
- Diabetes

Fact 1: Cancer is a disease that occurs when the cell cycle is no longer regulated. Fact 2: And leukemia and lymphoma are forms of cancer. Given the two facts above, what is a disease that occurs when the cell cycle is no longer regulated?
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A: Leukemia

Problem:OPTIONS:
- kill insects
- growth
- scarce resources
- allow growth
- important habitats
- Tropical
- develop poison
- burn trees

Fact 1: If a tree falls then sunlight becomes available to the surrounding plants. Fact 2: Like all plants, it needs sunlight and warmth to grow. Given the two facts above, if a tree falls, then sunlight becomes available to what?
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A: allow growth

Problem:OPTIONS:
- energy
- direct energy
- By being plugged into the wall
- Using magnets
- Batteries
- energy usage
- adding heat
- Solar power

Fact 1: Aflashlight requires a source of electricity to produce light. Fact 2: Electricity flows when a battery is connected to an object like a watch, toy, or flashlight. Given the two facts above, how do flashlights produce light?
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A:
Batteries