Write a correct answer to the given question based on its associated fact. Make sure that your answer is contained in the associated fact. Don't be creative and introduce any new word that is not mentioned in the associated fact! Remember that the associated fact has been rearranged to form the question. So, the correct answer words must lie within the associated fact. The correct answer can be a word, phrase, or even a sentence.
--------
Question: Fact: Deep gorges are formed by flowing rivers through erosion over long periods of time. 
Question: What are formed by flowing rivers through erosion over long periods of time?

Answer: deep gorges.


Question: Fact: dogs require nutrients to grow and heal. 
Question: what requires nutrients to grow and heal?

Answer: dogs.


Question: Fact: Insect bites can cause harm to people. 
Question: What can an insect to do cause harm to people?

Answer:
Bite.