question: Given the fact "electric devices require electrical energy to function", what is the answer to "Which uses electrical energy to function?"

answer: iPod

question: Given the fact "wind carries sand from one place to another place", what is the answer to "What most likely caused the castle built by children at the beach to disappear?"

answer: very strong eddies of fast moving air carried it away over time

question: Given the fact "if members of a species are born then the population of that species increases", what is the answer to "If members of a species are born then what of the species increases?"

answer: populace

question: Given the fact "green plants provide food for consumers by performing photosynthesis", what is the answer to "If a deer eats a berry plant, the plant eats"

answer:
its self created nutriment