Q: You are presented with the quiz "what produces electricty by burning?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "biofuel is used to produce electricity by burning" and "biofuels include ethanol, methanol, biodiesel, biocrude, and methane". So, what's the best answer to the question? | OPTIONS:
- cactuses
- ethanol
- engines
- cigars
- organisms
- cigarettes
- Conifers
- ferns
A: ethanol

Q: You are presented with the quiz "A bulb requires electrical energy to produce part of what kind of spectrum?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "alight bulb requires electrical energy to produce light" and "light is a part of the electromagnetic spectrum". So, what's the best answer to the question? | OPTIONS:
- an electron microscope
- magnetic
- autism spectrum
- electromagnetic
- rain or sun shine
- direct energy
- field
- hydrogen and oxygen
A: electromagnetic

Q: You are presented with the quiz "heavy rains cause waters to what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "heavy rains cause flooding" and "flood waters rise rapidly". So, what's the best answer to the question? | OPTIONS:
- rise rapidly
- Condensation
- parch the land
- dry the soil
- Sediment
- threatened
- dry up
- swamp vegetation
A: rise rapidly

Q: You are presented with the quiz "What is necessary for growth?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "cell division often causes growth" and "cell division is necessary for growth, repair, replacement, and reproduction". So, what's the best answer to the question? | OPTIONS:
- organic molecules
- cell movement
- nutrients
- cell death
- cell sensations
- Pituitary gland
- Proteins
- Cell splitting
A: Cell splitting