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: cats may compete for territory, water, food, or mates. 
Question: what may compete for territory, water, food, or mates?
cats.

Fact: When seasons change, weather effects change. 
Question: What is changed along with seasons changing?
weather effects.

Fact: an image in a mirror is formed by reflecting rays or beams. 
Question: what is reflected in a mirror to form an image?

rays or beams.