In this task, you need to write a topic word from the given fact. The topic word must have at least one word overlap with the given fact. The topic word often involves adding a new word from a related concept. In your topic word, use at least one word from the given fact. Topic words with two or more words work best.

[Q]: Fact: Head hair is especially important in preventing heat loss from the body.
[A]: Head hair is especially important in preventing heat loss from the body.


[Q]: Fact: Mutation creates new genetic variation in a gene pool.
[A]: gene pool.


[Q]: Fact: Amphibians are the first true tetrapods, or vertebrates with four limbs.
[A]:
Amphibians.