Problem:OPTIONS:
- neutralizing threats
- dismissal of nutrients
- heat produced
- Transfers energy
- retention of nutrients
- decomposition
- agriculture
- iron in water

Fact 1: Producers use energy and inorganic molecules to make food. Fact 2: Food preparation for retention of nutrients is included. Given the two facts above, producers use energy and inorganic molecules for what?
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A: retention of nutrients

Problem:OPTIONS:
- motion
- direct energy
- bioaerosols
- relocation
- diffusion
- heat energy
- communication
- movement

Fact 1: Vesicle transport requires energy, so it is also a form of active transport. Fact 2: Active transport is another form of diffusion. Given the two facts above, what is vesicle transport a form of?
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A: diffusion

Problem:OPTIONS:
- warmth
- calcite
- lipids
- an ion
- fibrous
- waves
- heat
- acidity

Fact 1: The force of water against the seed coat causes a root to emerge from a seed. Fact 2: Most waves are formed from the force of wind against the water. Given the two facts above, what against the seed coat causes a root to emerge from a seed?
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A: waves

Problem:OPTIONS:
- gases
- solids
- ferns
- body water
- rain
- liquids
- Water
- drinking

Fact 1: Ameasuring cup is used for measuring the volume of substances. Fact 2: Liquids are always measured accurately by volume. Given the two facts above, cups are used to note the accurate volume of what?
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A:
liquids