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: Nails prevent injury by forming protective plates over distal ends. 
Question: Nails prevent injury by forming protective plates over what ends?

Answer: distal.


Question: Fact: Fungus reproduce asexually by budding. 
Question: What can reproduce asexually by budding?

Answer: Fungus.


Question: Fact: Heat in the air can change the color of an environment from green to brown. 
Question: What condition can change an environment from green to brown?

Answer:
heat.