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.
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Question: Fact: Evolution occurs by a process called natural selection.

Answer: evolution changing.


Question: Fact: fossils are formed when layers of sediment cover the remains of organisms over time.

Answer: fish organisms.


Question: Fact: Some parasites live on the surface of their host.

Answer:
Surface parasite.