Problem:OPTIONS:
- Chemical dating
- Mechanical dating
- Non radioactive dating
- blastoids
- single-celled organisms
- Seismometer
- Radioactive dating
- an electron microscope

Fact 1: Radioactive dating is used to determine the age of fossils. Fact 2: Geologists use fossils to determine the age of the rock layer that it was found in. Given the two facts above, what do geologists use to determine the age of rock layers?
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A: Radioactive dating

Fact 1: Cancer cells divide more often than normal cells, and grow out of control. Fact 2: Cancer cells are abnormal and divide without control or order. Given the two facts above, what kind of cells are abnormal?
OPTIONS:
- nuclear
- kidney
- cell wall
- dangerous
- white
- parasites
- negative
- cancer
cancer

Fact 1: Decomposition increases the amount of nutrients in the soil. Fact 2: Organic matter is the plant and animal residue in the soil at various stages of decomposition. Given the two facts above, what does plant and animal residue increase in soil?
OPTIONS:
- Scent
- Temperature
- Bugs
- rainfall
- fossil fuels
- Water
- energy
- Nutrients

Answer: Nutrients

Question: Fact 1: Mutations that lead to cancer usually occur in genes that control the cell cycle. Fact 2: Mutations in genes that control the cell cycle are found in virtually all cancer cells. Given the two facts above, where are mutations found?
OPTIONS:
- alleles
- fossils
- retina
- skin
- embryos
- ovaries
- genes
- eggs
Answer: genes

input with options: Fact 1: Gills are used for breathing water by aquatic animals. Fact 2: All fish have gills . Given the two facts above, what do all fish breathe?
OPTIONS:
- oxygen
- lipids
- air
- keratin
- water
- seaweed
- mud
- lava
output: water

Problem: OPTIONS:
- Gunshots
- An object is seen
- a lightbulb
- ice
- sensory neurons
- a firecracker
- animals
- a stove
Q: Fact 1: Afirecracker converts chemical energy into sound. Fact 2: Hearing is the act of perceiving sound. Given the two facts above, what converts chemical energy into what we hear?
Answer:
a firecracker