Problem: OPTIONS:
- chlorofluorocarbons
- acetic acid
- Chemical energy
- carbon dioxide
- Organic compounds
- bioaerosols
- aqueous solution
- sugar in corn
Q: Fact 1: Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. Fact 2: Corn sugar is primarily glucose. Given the two facts above, ethanol is produced by alcoholic fermentation of what?
Answer: sugar in corn

Problem:OPTIONS:
- during the night
- they bend
- during prophase
- during reproduction
- an organism's body
- solid, liquid, gas
- during protein absorbtion
- Veins and arteries.

Fact 1: Chromosomes are coiled structures made of DNA and proteins. Fact 2: During prophase the chromosomes coil up. Given the two facts above, structures coil when, and are made of DNA and proteins?
****
A: during prophase

Fact 1: Excretion is the process of removing wastes and excess water from the body. Fact 2: Solid waste is called feces. Given the two facts above, what is the process of removing feces and excess water from the human body called?
OPTIONS:
- recycling
- salivation
- waste production
- excretion
- Exfoliation
- perspiration
- Deposition.
- Deposition
excretion

Fact 1: Vein deposits of gold and silver are formed by igneous intrusion. Fact 2: Granite, on the other hand, is an intrusive igneous rock. Given the two facts above, what are vein deposits of gold and silver formed by?
OPTIONS:
- mines
- tube
- calcite
- cracking
- rocks
- wind
- granite
- streams

Answer: granite

Question: Fact 1: Marine species live mainly in shallow coastal waters. Fact 2: Many marine species are used for medical research. Given the two facts above, what are many organisms found in shallow coastal waters used for?
OPTIONS:
- heat produced
- survival
- surf boards
- density
- heat energy
- Animal survival
- shoes
- medical research
Answer: medical research

input: OPTIONS:
- Fog rising over a lake
- pressure differences.
- Earth's axis of rotation is tilted
- Setting up lightning rods
- Cold air advancing on cold air
- Cold air advancing on warm air
- Changing the angle of the sun
- fall moving to winter Now, answer this question: Fact 1: Cold fronts cause thunderstorms as they pass by. Fact 2: If cold air is advancing on warm air, the front is called a cold front. Given the two facts above, which situation can cause a thunderstorm?
A:
output:
Cold air advancing on warm air