input: OPTIONS:
- evaporation
- Something from Nesco
- white vinegar
- Calcium carbonate
- salt and water.
- layers of fat
- Exfoliation
- adding heat Now, answer this question: Fact 1: Dehydrating food is used for preserving food. Fact 2: Our Nesco Food Dehydrators require no tray rotation due to a patented air flow system. Given the two facts above, what is used to preserve food?
A:
output: Something from Nesco

Fact 1: Creating wood-free paper does not require cutting down trees. Fact 2: To cut down a tree is like destroying a life. Given the two facts above, creating wood-free paper does not require doing what?

OPTIONS:
- deforestation
- destroying trees
- Dehydration
- kill them
- killing insects
- Pollution
- competing for resources
- to move people

Answer: destroying trees

Problem: OPTIONS:
- objects that have mass
- rain or sun shine
- Chemical energy
- hydrogen and oxygen
- an engine
- static electricity
- centrifugal force
- g forces
Q: Fact 1: Aflashlight converts chemical energy into light energy. Fact 2: Light energy can become heat energy and heat energy can become light energy. Given the two facts above, what can become heat energy?
Answer: Chemical energy

Problem:OPTIONS:
- drought
- humidity
- heat
- Dehydration
- less water
- flooding
- oxygen
- nitrogen

Fact 1: Lack of moisture in the air causes low amounts of rainfall. Fact 2: Humidity is moisture in the air. Given the two facts above, lack of _ causes low amounts of rainfall?
****
A: humidity

Fact 1: Staying warm has a positive impact on an animal 's survival. Fact 2: Humans are animals too. Given the two facts above, whose survival does staying warm have a positive impact on?
OPTIONS:
- stability
- a fish
- Mammal
- h2o
- oxygen
- ice cubes
- pigeons
- humans
humans

Fact 1: The emission of sulfur dioxide causes acid rain. Fact 2: Scrubbers significantly reduce emissions of sulfur dioxide. Given the two facts above, scrubbers can be used for what?
OPTIONS:
- Animal survival
- storing water
- hydrate their cells
- water conservation
- reducing acid rain
- Relieve pain
- root growth
- protect them

Answer:
reducing acid rain