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: water vapor condensing in the clouds causes soil to moisten. 
Question: what does water vapor condensing in the clouds cause?
moist soil.

Fact: Veins generally carry blue blood. 
Question: Veins generally carry what type of blood?
blue.

Fact: Cells are organized into tissues become functional units. 
Question: Cells are organized into tissues to what?

become functional units.