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.

[EX Q]: Fact: building housing developments usually requires replacing animal habitats.
[EX A]: animal habitats.

[EX Q]: Fact: Bioterrorism is the intentional release or spread of agents of disease.
[EX A]: agents of disease.

[EX Q]: Fact: breathing is when a gill converts from oxygen in water into oxygen in blood.
[EX A]:
breathing respiration.