- An organism 's environment affects that organism 's acquired characteristics
- The condition of parts of an organism are acquired characteristics
- Therefore, an organism's environment affects the condition of parts of an organism

- A wolf is a kind of animal
- Fur is often part of an animal
- Hence, fur is often a part of a wolf

- An animal is a kind of organism
- A wolf is a kind of animal
- So, a wolf is a kind of organism

- An organism's environment affects the condition of parts of an organism
- Fur is often a part of a wolf
- A wolf is a kind of organism
- So, the environment of a wolf affects the condition of the fur of the wolf

Hence, the environment of a wolf affects the condition of the fur of the wolf
Which of the following characteristics of an individual wolf is most affected by its environment?
- An organism 's environment affects that organism 's acquired characteristics 
- An animal is a kind of organism 
- The condition of parts of an organism are acquired characteristics 
- A wolf is a kind of animal 
- Fur is often part of an animal