- Fur is a covering around the body of an animal
- A covering can be used as protection against cold weather
- So, thick fur can be used for keeping warm

- Thick fur can be used for keeping warm
- An animal requires warmth for survival in a cold environment
- Hence, thick fur can be used for survival in a cold environment by keeping warm

- Snow is cold
- Snowy means a large amount of snow
- So, a snowy environment is a cold environment

- Thick fur can be used for survival in a cold environment by keeping warm
- A snowy environment is a cold environment
- Hence, thick fur can be used for survival in a snowy environment by keeping warm

- Thick fur can be used for survival in a snowy environment by keeping warm
- Something that is used for survival has a positive impact on survival
- So, thick fur has a positive impact on an animal's survival in a snowy environment

Hence, thick fur has a positive impact on an animal's survival in a snowy environment
Question
Which characteristic is most beneficial for an animal living on a snowy mountain?

Context
- Fur is a covering around the body of an animal 
- Snow is cold 
- A covering can be used as protection against cold weather 
- An animal requires warmth for survival in a cold environment 
- Something that is used for survival has a positive impact on survival 
- Snowy means a large amount of snow