input: OPTIONS:
- heat production
- heat is produced
- sandpaper
- It gets heated up
- decrease in temperature
- explode
- heat the body
- increase in temperature Now, answer this question: Fact 1: Friction causes the temperature of an object to increase. Fact 2: Friction Rubbing an object on another object can produce friction. Given the two facts above, what does rubbing an object on another object cause that object to do?
A:
output: increase in temperature

input: OPTIONS:
- heat produced
- remains of prehistoric life
- layers of fat
- The area was once underwater
- the Great Barrier Reef
- the body's largest organ
- sedimentary rocks
- it keeps an organism warm Now, answer this question: Fact 1: Many corals secrete an exoskeleton that builds up to become a coral reef. Fact 2: Australia's coral reefs, including the Great Barrier Reef, are no exception. Given the two facts above, what was formed by exoskeletons?
A:
output: the Great Barrier Reef

input: OPTIONS:
- evaporation
- Enzymes
- boiling
- glycogen
- liquid
- nutrients
- bacteria
- vaporization Now, answer this question: Fact 1: Bacteria cause food to spoil. Fact 2: Milk was loaded with bacteria that quickly spoiled, making it undrinkable. Given the two facts above, what can make milk undrinkable?
A:
output:
bacteria