Problem:OPTIONS:
- Calcium carbonate
- dinosaurs
- a barometer
- electron microscope
- a thermometer
- a decay curve
- chemical equations
- Physical weathering

Fact 1: Radioactive dating is used to determine the age of fossils. Fact 2: Radioactive dating requires the use of a decay curve. Given the two facts above, what is used to determine the age of fossils?
****
A: a decay curve

Fact 1: Mollusks have a circulatory system with one or two hearts that pump blood. Fact 2: Blood is pumped by the heart into blood vessels called arteries. Given the two facts above, mollusks have a circulatory system with one or two hearts that move blood into what?
OPTIONS:
- eyes
- caverns
- body water
- food
- lungs
- allow growth
- drink
- arteries
arteries

Fact 1: Burning wood is used to produce heat. Fact 2: Heat is kinetic energy. Given the two facts above, burning wood is used to produce what type of energy?
OPTIONS:
- Light
- warmth
- potential
- Fuel cells
- food
- electrical
- mechanical
- kinetic

Answer: kinetic

Question: Fact 1: Insulated material can be used for keeping warm. Fact 2: Wool and some of the new insulated fleece materials are good. Given the two facts above, what can be used to keep warm?
OPTIONS:
- hair
- eating steak
- wool
- fibers
- hats
- catching lobster
- fueling cars
- fur
Answer: wool

input with options: Fact 1: Burning fossil fuels increases the carbon in the atmosphere. Fact 2: More carbon in the atmosphere means atmospheric warming. Given the two facts above, what increases when fossil fuels are burned?
OPTIONS:
- Greenhouse gasses
- Greenhouse gases
- cancer
- wood ash
- atmospheric warming
- coal
- heat energy
- Temperature
output: atmospheric warming

Problem: OPTIONS:
- water
- nutrients
- toxins
- salt
- A virus
- sugar
- leeches
- peat
Q: Fact 1: Dehydrating food is used for preserving food. Fact 2: Dehydration is the removal of water. Given the two facts above, what can be removed to preserve food?
Answer:
water