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: Some viruses have an envelope of phospholipids and proteins.
[EX A]: envelope phospholipids and proteins.

[EX Q]: Fact: Adult sponges are sessile.
[EX A]: sessile immobile.

[EX Q]: Fact: Climate influences plant growth, biodiversity, and adaptations of land organisms.
[EX A]:
biodiversity increases survival.