input: OPTIONS:
- solar heating
- high speed fall from space
- Chemical energy
- The area was once underwater
- permineralization
- Temperature
- volcanic ejection
- chemical weathering Now, answer this question: Fact 1: Chemical weathering causes iron in rock to oxidize. Fact 2: When iron oxidizes it produces iron oxide, more commonly referred to as rust. Given the two facts above, rust of iron in rocks is a direct result of ?
A:
output: chemical weathering

Fact 1: Being distracted while driving can cause people to crash their car. Fact 2: Cell phones are a distraction to driving. Given the two facts above, cell phones can cause people in cars to what?

OPTIONS:
- eardrum
- crash
- death
- Injury
- stop for gas
- get a flat tire
- move
- have a breakdown

Answer: crash

Problem: OPTIONS:
- an image
- photons
- tiny polyps
- periscopes
- amoebae
- microscopes
- x-rays
- telescopes
Q: Fact 1: Microscope is used to see small things by biologists by making them appear bigger. Fact 2: Bacteria are very small. Given the two facts above, what are used to see bacteria by biologists by making them appear bigger?
Answer: microscopes

Problem:OPTIONS:
- a hydraulic system
- increases a body's strength
- helping to prevent floods
- Electric generators
- flow of electrons
- energy of moving objects
- power stations
- fissures of hot, acidic water

Fact 1: Hydropower requires damming a river. Fact 2: Many dams along rivers and creeks help prevent floods. Given the two facts above, hydropower requires what?
****
A: helping to prevent floods

Fact 1: If a tree falls then sunlight becomes available to the surrounding plants. Fact 2: Oak trees are found throughout. Given the two facts above, what falls making sunlight available to surrounding plants?
OPTIONS:
- LEDs
- grass
- elms
- oak
- pine
- clouds
- palm
- acorns
oak

Fact 1: Astronauts require preserved food for extended flights. Fact 2: For example, food contains Calories, units of energy content. Given the two facts above, what do astronauts require for long flights?
OPTIONS:
- problems
- nutrients
- glycogen
- danger
- energy
- sugar
- hydration
- trouble

Answer:
energy