input: OPTIONS:
- thermal insulators
- It helps them survive
- during the day
- spring, summer, autumn, winter
- compounds with double bonds
- hydrogen and oxygen
- Something with exactly eight protons
- it helps plants in growing Now, answer this question: You are presented with the quiz "Plants use what type of compounds to store energy?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "plants use unsaturated fatty acids to store energy" and "among the unsaturated fatty acids are compounds with one, two or three double bonds". So, what's the best answer to the question?
A:
output: compounds with double bonds
You are presented with the quiz "What can amphibians permeable skin do?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "amphibians have permeable skin that easily absorbs substances from the environment" and "some substances are harmful to the body and block biological systems". So, what's the best answer to the question?

OPTIONS:
- Display wealth
- Make money
- resistance
- Help them fly
- Vibrates
- Harm them
- It expands
- Damages them

Answer: Harm them
Problem: OPTIONS:
- raining
- shedding
- mussels
- raking
- herbicide
- fossil fuels
- green manures
- composting
Q: You are presented with the quiz "What increases the amount of organic matter in soil?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "decomposition increases amount of organic matter in soil" and "composting is simply the natural decomposition of organic matter". So, what's the best answer to the question?
Answer: composting
Problem:OPTIONS:
- decrease
- eat more
- increase
- break off
- threatened
- reproduce
- reduce
- kill them

You are presented with the quiz "Harming a certain kind of animal will cause the population of that animal to do what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "harming an animal species causes that animal 's population to decrease" and "species are the different kinds of organisms". So, what's the best answer to the question?
****
A: decrease
You are presented with the quiz "what flows through a circuit when it is completed?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "completing a circuit causes electricity to flow through that circuit" and "electricity is electrons in motion". So, what's the best answer to the question?
OPTIONS:
- energy
- heat energy
- electrons
- direct energy
- light switch
- neutrons
- Solar energy
- h2o
electrons
You are presented with the quiz "Distilling water removes what before people drink it?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "treating water is used to remove harmful substances before drinking" and "distilled water is treated to remove the minerals found naturally in the water". So, what's the best answer to the question?
OPTIONS:
- one celled organisms
- single-celled organisms
- layers of fat
- Chemical energy
- harmful substances
- hydrogen
- water
- oxygen

Answer:
harmful substances