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.

[EX Q]: Fact: measuring diamonds requires scratching them. 
Question: What can you scratch to measure?
[EX A]: diamonds.

[EX Q]: Fact: combining an egg and sperm increases genetic diversity. 
Question: what increases genetic diversity?
[EX A]: combining egg and sperm.

[EX Q]: Fact: Molecules of tRNA bring the building blocks of proteins to the ribosome in the correct sequence. 
Question: Molecules of _ bring the building blocks of protein to the ribosomes in the correct sequence.?
[EX A]:
tRNA.