input: OPTIONS:
- Movement of an air mass
- Effective fertilizers
- the ground shaking
- Increased irrigation
- Crop harvesting
- Decreased precipitation
- single-celled organisms
- forest is destroyed Now, answer this question: You are presented with the quiz "What can cause famine?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "drought is when amount of precipitation decreases" and "drought causes famine, which contributes to decentralization and unrest". So, what's the best answer to the question?
A:
output: Decreased precipitation
You are presented with the quiz "Male dogs use urine to mark their territory the same way as they find what" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "male dogs use pheromones in urine to mark their territory" and "all animals emit pheromones to mate". So, what's the best answer to the question?

OPTIONS:
- H 2 O
- humans
- food
- shelter
- a path
- abcess
- mates
- water

Answer: mates
Problem: OPTIONS:
- a hydraulic system
- Water expanding
- kinetic energy
- heating liquids
- Condensation
- Evaporation
- fossil fuels
- circulatory system
Q: You are presented with the quiz "What causes rain to fall?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "condensation causes clouds to form" and "clouds do create rain". So, what's the best answer to the question?
Answer: Condensation
Problem:OPTIONS:
- cellulose
- bamboo
- heat
- fibrous
- otters
- energy
- chemicals
- Loose

You are presented with the quiz "what can be used to make clothing for keeping warm?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "thick fur can be used for keeping warm" and "otters fur is the thickest fur of any animal". So, what's the best answer to the question?
****
A: otters
You are presented with the quiz "Aging occurs as _ stops" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aging occurs as cells lose their ability to divide" and "mitosis is cell division". So, what's the best answer to the question?
OPTIONS:
- mitosis
- reproduction
- hormone production
- illness
- lmestone
- death
- Deposition
- metabolism
mitosis
You are presented with the quiz "What forms when molecules react with one another?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "chemical bonds form when substances react with one another" and "all substances are composed of molecules". So, what's the best answer to the question?
OPTIONS:
- Chemical energy
- substrates
- chemical bonds
- living things
- Organic compounds
- Energy.
- new elements
- flow of electrons

Answer:
chemical bonds