- In order to eat food an animal must find food
- Eating food is used to get nutrients / energy by  animals
- Hence, animals must find food to get nutrients / energy

- Animals must find food to get nutrients / energy
- Finding something requires sensing that something
- So, animals must sense food to find food

- Animals must sense food to find food
- Feeling is when a living thing senses through touch
- Hence, feeling can be used for finding food

- Feeling can be used for finding food
- Whiskers are a part of some fish for feeling
- So, whiskers are part of a fish used for finding food

- An animal needs to eat food for nutrients
- An animal / living thing requires nutrients for survival
- Hence, an animal requires food for survival

- An animal requires food for survival
- A resource is something that is required for survival
- Hence, food is a resource for animals

- Food is a resource for animals
- The ability to find resources has a positive impact on an animal 's survival
- So, the ability to find food has a positive impact on an animal's survival

- Whiskers are part of a fish used for finding food
- The ability to find food has a positive impact on an animal's survival
- Therefore, whiskers have a positive impact on a fish's survival by helping it find food

Therefore, whiskers have a positive impact on a fish's survival by helping it find food
Question
Stout beardfish live in the deep ocean. They live so far down that there is no light. Which characteristic would best help stout beardfish to survive in the dark?

Context
- The ability to find resources has a positive impact on an animal 's survival 
- A resource is something that is required for survival 
- Finding something requires sensing that something 
- In order to eat food an animal must find food 
- Feeling is when a living thing senses through touch 
- An animal needs to eat food for nutrients 
- An animal / living thing requires nutrients for survival 
- Eating food is used to get nutrients / energy by  animals 
- Whiskers are a part of some fish for feeling