input: OPTIONS:
- extremely high frequencies
- matter vibrating
- population movement
- extremely high-pitched sound
- electromagnetic energy
- matter's height
- sensory neurons
- rays or beams Now, answer this question: Fact 1: Matter vibrating can cause sound. Fact 2: When the waves pass our ears, a sound is detected. Given the two facts above, what can our ears detect?
A:
output: matter vibrating

Fact 1: Most canyons are formed by flowing rivers through erosion over long periods of time. Fact 2: Rivers, rainwater, well water and most lakes contain fresh water. Given the two facts above, what are canyons formed by?

OPTIONS:
- clouds
- stars
- erosion
- loose soil
- wind
- ice wedging
- rainwater
- calcite

Answer: rainwater

Problem: OPTIONS:
- kilometers
- kinetic energy
- Electrical energy
- increase h2o
- principals of aerodynamics
- basic building blocks of life
- opposing motion force
- increase oxygen
Q: Fact 1: Friction causes the speed of an object to decrease. Fact 2: Friction is a Force that opposes motion. Given the two facts above, what causes the speed of an object to decrease?
Answer: opposing motion force

Problem:OPTIONS:
- opossums
- vacuum
- minerals
- single-celled organisms
- bullfrogs
- female sex cells
- dolphins
- female connectors

Fact 1: An egg requires warmth to survive. Fact 2: Eggs, the female sex cells, are produced in ovules, which are inside the ovary. Given the two facts above, what requires warmth to survive?
****
A: female sex cells

Fact 1: Food consists of organic molecules that store energy in their chemical bonds. Fact 2: Many of the molecules in food are called nutrients. Given the two facts above, what are nutrients, basically?
OPTIONS:
- nucleus
- protoplasm
- glucose
- allow growth
- cells
- roots
- health
- molecules
molecules

Fact 1: Sweat is used for adjusting to hot temperatures by some animals. Fact 2: Adjusts controls to regulate temperature and humidity of animals' quarters. Given the two facts above, what is used to adjust controls to regulate temperature?
OPTIONS:
- glass
- motors
- neurons
- power
- copper
- sweat
- forces
- keratin

Answer:
sweat