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.

[Q]: Fact: Monotremes lay eggs. 
Question: What is the distinguishing feature of monotremes?
[A]: They lay eggs.


[Q]: Fact: marine and benthic creatures lack respiratory and excretory systems. 
Question: what creatures lack respiratory and excretory systems?
[A]: marine and benthic.


[Q]: Fact: uneven heating of the earth's surface can cause damage to buildings. 
Question: What can uneven heating of the earth's surface cause?
[A]:
Damage to buildings.