Fact 1: Rocks interacting with wind over long periods of time causes weathering. Fact 2: Rocks weather at different rates. Given the two facts above, what affects rocks?

OPTIONS:
- rivers
- force
- mildew
- wind
- magma
- Weight
- soda
- magnetism

Answer: wind

Problem: OPTIONS:
- antigens
- Pesticides
- cold weather
- fever
- viruses
- food
- Smoking
- germs
Q: Fact 1: Antigens are molecules that the immune system recognizes as foreign to the body. Fact 2: An allergy is a reaction to a substance the body recognizes as foreign. Given the two facts above, an allergy can be caused by?
Answer: antigens

Problem:OPTIONS:
- contamination
- produces electricity
- It expands
- becomes hot
- they bend
- becomes cold
- vibrates
- anemia

Fact 1: If a thermal conductor is exposed to a source of heat then that conductor may become hot. Fact 2: Copper is a great thermal conductor. Given the two facts above, what happens to copper if exposed to heat?
****
A: becomes hot

Fact 1: Threatening behavior by predators causes a porcupine to extend its quills. Fact 2: Fishers are predators that can eat porcupines. Given the two facts above, what might a porcupine do if threatened by a fisher?
OPTIONS:
- dig in the dirt
- Decrease bodily water
- killing insects
- lower its quills
- kill them
- humans disturb it
- show its teeth
- show its quills
show its quills

Fact 1: The vanes rotating in an electric fan causes air to move. Fact 2: Fans move air, providing a cooling breeze. Given the two facts above, what in an electric fan provides a cooling breeze?
OPTIONS:
- kinetic energy
- metal face
- heat energy
- activation energy
- Solar energy
- plastic buttons
- vanes rotating
- electric cord

Answer: vanes rotating

input with options: Fact 1: Streams may start with runoff or water seeping out of a spring. Fact 2: Then, the stream flows into a larger body of water. Given the two facts above, what bodies of water may start with runoff?
OPTIONS:
- solid, liquid, gas
- agriculture
- flooding
- Condensation
- smaller ones
- loose soil
- reducing acid rain
- storms
output:
smaller ones