Problem:OPTIONS:
- belt size
- watershed
- evaporation
- rulers
- mouth of rivers
- streams
- measuring tape
- measuring cups

Fact 1: Ameasuring cup is used for measuring the volume of substances. Fact 2: For example, water is a substance. Given the two facts above, what can determine the volume of water?
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A: measuring cups

Problem:OPTIONS:
- Earthworms
- animals
- automobile
- mechanical
- train
- airplane
- Movement
- bicycle

Fact 1: Riding a bike does not cause pollution. Fact 2: Air pollution can cause diseases and harm crops. Given the two facts above, what form of transportation does not cause diseases or harm crops? ?
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A: bicycle

Problem:OPTIONS:
- Planting flowers
- Winter
- Pollution
- Condensation
- Photosynthesis
- Sulfur
- coal
- bacteria

Fact 1: Changes in the pH of soil can cause plants to die. Fact 2: Sulfur lowers pH in soil. Given the two facts above, what can cause plants to die?
****
A: Sulfur

Problem:OPTIONS:
- Birth defects
- Smoking
- cigarettes
- radiation
- Malnutrition
- Pesticides
- rays or beams
- cancer pills

Fact 1: Mutations that lead to cancer usually occur in genes that control the cell cycle. Fact 2: Radiation destroys cells and can cause genetic mutations. Given the two facts above, which of the following can cause cancer?
****
A:
radiation