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: boulders are formed by snow, ice, and rock melting sometimes. 
Question: what melts sometimes to form boulders?

A: snow, ice, and rock.
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Q: Fact: phenotypes encoded in DNA are called genetic traits. 
Question: What are encoded in DNA and called genetic traits?

A: phenotypes.
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Q: Fact: Biomass is the total mass of primary consumers. 
Question: What is the total mass of primary consumers?

A:
Biomass.
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