Problem: OPTIONS:
- heat energy
- heat production
- scattered light
- energy usage
- freezer burn
- movie production
- fur production
- Temperature
Q: Fact 1: Thick fur can be used for keeping warm. Fact 2: When the body is warm, heat production is minimized. Given the two facts above, thick fur can be used for minimizing what?
Answer: heat production

Problem:OPTIONS:
- exoskeleton
- thermal insulators
- thick filling
- a hydraulic system
- Animal fur
- layers of skin
- layers of fat
- deep water

Fact 1: Athermal insulator slows the transfer of heat. Fact 2: Heat transfer fluids, such as antifreeze, protect the solar collector from freezing in cold weather. Given the two facts above, what protects things from freezing in cold weather?
****
A: thermal insulators

Fact 1: Burning wood is used to produce heat. Fact 2: Wood has to be cut to be used in a wood-burning stove. Given the two facts above, what does wood need to be used in a stove?
OPTIONS:
- diced
- gas
- fire
- flattened
- heat
- Oak
- hammered
- cut
cut

Fact 1: Mutations are essential for evolution to occur. Fact 2: Viruses can cause a mutation in a gene. Given the two facts above, what can cause evolution to occur?
OPTIONS:
- heat
- viruses
- alleles
- pollen
- Pesticides
- extinction
- A computer
- animals

Answer: viruses

Question: Fact 1: Being burried under soil and mud changes peat into coal through extreme heat and pressure in a swamp over a long period of time. Fact 2: Well, a swamp is a type of wetland. Given the two facts above, being buried under soil and mud changes what into coal in wetlands over time?
OPTIONS:
- peat
- phytoplankton
- fields
- oil
- air
- pH
- sunlight
- elms
Answer: peat

input: OPTIONS:
- exocrine glands
- food and shelter
- exoskeleton
- bones
- Energy
- Chemical energy
- plasma
- Energy. Now, answer this question: Fact 1: Many corals secrete an exoskeleton that builds up to become a coral reef. Fact 2: Good examples are Bubble coral, Elegance coral, Frogspawn and other Euphyllia corals. Given the two facts above, what is secreted by organisms like frogspawn to become a reef?
A:
output:
exoskeleton