Problem: OPTIONS:
- vaporization
- it shrinks
- colder weather
- It expands
- it boils
- flooding
- nothing
- erosion
Q: Fact 1: When water freezes , that water expands. Fact 2: Water freezes at zero degrees Celsius. Given the two facts above, what happens when water reaches zero degrees Celsius? ?
Answer: It expands

Problem:OPTIONS:
- Lift
- magnetism
- mass
- matter
- wind
- orbits
- energy
- forces

Fact 1: Gravity pulls objects towards planets. Fact 2: Gravity is created by mass. Given the two facts above, what pulls objects towards planets is created by ?
****
A: mass

Fact 1: Preventing the transfer of heat from an organims 's body causes that organism to keep warm. Fact 2: First, a hat serves as insulation against convective heat transfer. Given the two facts above, what serves as insulation to keep the body warm?
OPTIONS:
- exoskeleton
- wearing hats
- wearing glasses
- Animal fur
- sweating
- with their fur
- wearing jewelry
- wearing nail polish
wearing hats

Fact 1: Uneven heating of the Earth 's surface cause wind. Fact 2: Wind is produced as the sun heats the air. Given the two facts above, what causes wind?
OPTIONS:
- speed
- the sun
- energy
- supersonic
- Energy.
- erosion
- a chime
- messengers

Answer: the sun

Question: Fact 1: Aplant requires sunlight for photosynthesis. Fact 2: All plants live and grow by photosynthesis. Given the two facts above, plants require sunlight for what?
OPTIONS:
- living and growing
- flow of electrons
- potting and soiling
- manuring
- fertilizing
- nutrients
- reproduce
- bloom time
Answer: living and growing

input: OPTIONS:
- audio and video tape
- Electrical energy
- irradiation
- A computer
- raising their temperature
- Something coming from a gland
- The bending of a ray of light
- characteristics Now, answer this question: Fact 1: Ethologists usually study how animals behave in their natural environment. Fact 2: Many ethologists capture their observations on videotape or audio tape. Given the two facts above, scientists study animal behavior through which of the following?
A:
output:
audio and video tape