Fact 1: Boiling means change from a liquid into a gas by adding heat energy. Fact 2: Propane can be either a liquid or a gas. Given the two facts above, what is added to propane to change it through the boiling process?

OPTIONS:
- vapors
- energy
- pH
- heat
- fats
- SO2
- fusion
- oxygen

Answer: heat

Problem: OPTIONS:
- crawfish burrows
- major threat to health
- Deposition
- bending light rays
- earthworm homes
- Exfoliation
- termite burrows
- Earthworm burrows
Q: Fact 1: Earthworm burrows help aerate soil, which is also good for plants. Fact 2: Aeration breaks up the soil and allows water to penetrate. Given the two facts above, _ allow water to penetrate the soil.?
Answer: Earthworm burrows

Problem:OPTIONS:
- cuddles
- cigarettes
- viruses
- causing love
- warm covers
- influenza
- electricity
- electric shock

Fact 1: Electrocution causes harm to an organism. Fact 2: Electrocution includes electric shock. Given the two facts above, what causes harm to an organism?
****
A: electric shock

Fact 1: Evolution occurs by a process called natural selection. Fact 2: Adaptation is the result of natural selection. Given the two facts above, evolution occurs by a process that results in what?
OPTIONS:
- animals
- adaptation
- unnatural selection
- Plants growth
- evolution stopping
- supernatural spirits
- rapid expansion
- competition
adaptation

Fact 1: Microbial fuel cells convert chemical energy into electrical energy. Fact 2: Electrical energy refers to energy associated with the flow of electrons. Given the two facts above, what do microbial fuel cells convert chemical energy into?
OPTIONS:
- rays or beams
- transportation technology
- Deoxyribonucleicacid
- flow of electrons
- hydrogen and oxygen
- deoxyribonucleic acid
- an engine
- heating liquids

Answer: flow of electrons

input with options: Fact 1: Exercise has a positive impact on a human 's health. Fact 2: Exercise Regular exercise is a sleep promoter. Given the two facts above, what may improve health?
OPTIONS:
- Enzymes
- sleep
- food
- Lift
- fats
- insomnia
- hunger
- loud noises
output:
sleep