input: OPTIONS:
- Toxins
- CO 2
- liquid
- salt
- Lead
- Carbon
- Acids
- sulfur Now, answer this question: You are presented with the quiz "Biomes that have suffered mainly from pollution have water that contains little or no what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "freshwater biomes have water that contains little or no salt" and "freshwater biomes have suffered mainly from pollution". So, what's the best answer to the question?
A:
output: salt
You are presented with the quiz "What does plant and animal residue increase in soil?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "decomposition increases the amount of nutrients in the soil" and "organic matter is the plant and animal residue in the soil at various stages of decomposition". So, what's the best answer to the question?

OPTIONS:
- Scent
- Temperature
- Bugs
- rainfall
- fossil fuels
- Water
- energy
- Nutrients

Answer: Nutrients
Problem: OPTIONS:
- the Sun
- peachleaf willow
- rocks
- fur seals
- warm-blooded
- trees
- passenger pigeons
- some amphibians
Q: You are presented with the quiz "What uses its sense of smell to find a mate?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "most salamanders use their sense of smell to find a mate" and "like frogs, salamanders are amphibians". So, what's the best answer to the question?
Answer: some amphibians
Problem:OPTIONS:
- an area wet with medicine
- a pill for health
- cause their death
- an area clean from bacteria
- fissures of hot, acidic water
- an area swollen with pus
- contamination
- harmful substances

You are presented with the quiz "scraping oneself on a contaminated object may cause what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "scraping oneself on a contaminated object may cause infection" and "an abscess is an infected area swollen with pus". So, what's the best answer to the question?
****
A: an area swollen with pus
You are presented with the quiz "How is dew formed?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "dew is formed when water vapor condenses over night" and "condensation is water vapor changing to liquid water". So, what's the best answer to the question?
OPTIONS:
- When a liquid disappears
- Vapor turning into a liquid
- photosyntehsis
- Something made from fermented ricce
- a hemisphere is tilted away from the sun
- Liquid turning into vapor
- At the peak of a mountain
- When water evaporates
Vapor turning into a liquid
You are presented with the quiz "How many types can viruses infect?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "viruses often infect bacteria" and "bacteria are normally classified as either 'good' bacteria or 'bad' bacteria". So, what's the best answer to the question?
OPTIONS:
- mice
- pigs
- bird
- RNA
- ova
- tiny
- HPV
- Two

Answer:
Two