Fact 1: Most carcinogens cause cancer by producing mutations in DNA. Fact 2: Jet fuels are carcinogens. Given the two facts above, what can cause cancer by producing mutations in DNA?

OPTIONS:
- A drug.
- Pesticides
- cigarettes
- A computer
- Toxicity
- jet fuel
- copper
- PDAs

Answer: jet fuel

Problem: OPTIONS:
- scales
- fins
- streams.
- coral
- gills
- Collagen
- mussels
- whiskers
Q: Fact 1: Scales are used for protection by scaled animals. Fact 2: Fish are backboned aquatic animals. Given the two facts above, what are used for protection by fish?
Answer: scales

Problem:OPTIONS:
- energy
- touch
- photons
- vision
- smell
- power
- the sun
- sound

Fact 1: Eyes are used for seeing by animals by sensing light. Fact 2: Lastly Fire, or light, is perceived through the sense of vision. Given the two facts above, eyes are used for seeing by animals by sense of what?
****
A: vision

Fact 1: Some animals' fur grows thicker for staying warm in the winter. Fact 2: During winter, their hollow fur absorbs much heat as they sun themselves. Given the two facts above, hollow fur keeps animals what?
OPTIONS:
- fats
- camouflaged
- safe
- warm
- cooled
- liquid
- live
- from drowning
warm

Fact 1: If two balanced forces act on an object in opposite directions then that object will remain stationary. Fact 2: If an object is at equilibrium, then the forces are balanced. Given the two facts above, what will happen if an object is at equilibrium?
OPTIONS:
- kinetic energy
- evaporation
- It accelerates
- flow of electrons
- It explodes
- It remains stationary
- The bending of a ray of light
- It reverses direction

Answer: It remains stationary

input with options: Fact 1: Erosion causes deposition. Fact 2: Deposition landforms also occur forming stalactites and stalagmites . Given the two facts above, what contributes to forming stalactites and stalagmites?
OPTIONS:
- Shadows
- rainfall
- Bats
- Columns
- heat
- flooding
- Erosion
- calcite
output:
Erosion