Fact 1: Dilation occurs when cell walls relax. Fact 2: Blood flow is improved by vitamin E and it causes blood vessels to dilate or expand. Given the two facts above, what happens when cell walls relax?
OPTIONS:
- evaporation
- permineralization
- preventing heat transfer
- allow growth
- it keeps an organism warm
- air cools
- Cell walls expand
- heat produced

Answer: Cell walls expand

Fact 1: Conserving water can be used for survival in a dry environment. Fact 2: Plants survive with the help of water. Given the two facts above, what do plants conserve?
OPTIONS:
- energy
- sodium
- oxygen
- protein
- air
- nitrogen
- water
- plasma

Answer: water

Fact 1: The vanes rotating in an electric fan causes air to move. Fact 2: Fans move air, providing a cooling breeze. Given the two facts above, what in an electric fan provides a cooling breeze?
OPTIONS:
- kinetic energy
- metal face
- heat energy
- activation energy
- Solar energy
- plastic buttons
- vanes rotating
- electric cord

Answer:
vanes rotating