Q: Fact 1: All plants have a characteristic life cycle that includes alternation of generations. Fact 2: All ferns are shade plants. Given the two facts above, what has a characteristic life cycle that includes alternation of generations? | OPTIONS:
- humans
- leaves
- Oak
- dogs
- Trees
- cacti
- amoeba
- ferns
A: ferns

Q: Fact 1: Treating water is used to remove harmful substances before drinking. Fact 2: Arsenic, a naturally occurring substance, contaminates water sources in many countries. Given the two facts above, what is treating water used to remove before drinking? | OPTIONS:
- arsenic
- air
- cellulose
- chemicals
- Collagen
- loose dirt
- water vapor
- ice
A: arsenic

Q: Fact 1: Absorbing energy causes objects to heat. Fact 2: Metal expands when heated. Given the two facts above, metal expands when it does what? | OPTIONS:
- absorbs energy
- electricity
- dries
- freezes
- direct energy
- Relieve pain
- to move people
- contracts
A: absorbs energy

Q: Fact 1: Beads of water are formed by water vapor condensing. Fact 2: Condensation is the change of water vapor to a liquid. Given the two facts above, where do beads of water come from? | OPTIONS:
- Too much water
- underground systems
- When the water is too cold
- Water spills
- Vapor turning into a liquid
- Warm air moving into cold air
- At the peak of a mountain
- To another location like underground
A: Vapor turning into a liquid