Problem:OPTIONS:
- staying warm
- keep warm
- Absorb light
- allow growth
- keep birds
- protect them
- keep cool
- keep grounded

Fact 1: Feathers help birds fly and provide insulation. Fact 2: Penguins keep warm with layers of insulation. Given the two facts above, feathers help birds fly and what?
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A: keep warm

Problem:OPTIONS:
- decomposition
- genetic material
- nutrients
- genetic diversity
- Enzymes
- heat energy
- Quality of life
- cactuses

Fact 1: Decomposition increases amount of organic matter in soil. Fact 2: Organic matter is important to soil productivity. Given the two facts above, what is important to soil productivity?
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A: decomposition

Problem:OPTIONS:
- rabbit
- Energy
- animals
- those who don't eat
- insects
- producers
- dead beings
- consumers

Fact 1: Consumers take in food by eating producers or other living things. Fact 2: Producers gain in terms of producer surplus. Given the two facts above, what can take in food by eating those that gain in terms of surplus?
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A: consumers

Problem:OPTIONS:
- flow of electrons
- fault movement
- heat energy
- Energy.
- volcanos
- magma
- Movement
- lava

Fact 1: Faulting of rock in Earth 's crust causes earthquakes. Fact 2: Earthquakes are caused by fault movement. Given the two facts above, what are responsible for earthquakes?
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A:
fault movement