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.

Fact: loud noises can cause animals to become dangerous. 
Question: What can cause animals to become dangerous?
Loud noises.

Fact: food can cause illness. 
Question: What is a source of  illness?
food.

Fact: uneven heating of the Earth's surface causes moving air. 
Question: what does uneven heating of Earth's surface cause?

moving air.