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.

Fact: melting is when solids are heated above their melting point.
melting dissolve.

Fact: Biodiversity generally increases from the poles to the equator.
Biodiversity equator.

Fact: dehydrating food is used for preserving food.

beef jerky dehydrated.