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: friction causes the temperature of an object to increase.

A: friction movement.
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Q: Fact: Pressure receptors are found mainly in the skin.

A: Pressure receptors.
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Q: Fact: when a plant grows , the size of the leaves of that plant may increase.

A:
ferns plant.
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