Question:
Use evidence from the fact that cycles of day and night occur once per day to answer the following question. "Cycles of day and night occur how often in a day?"

Answer:
singular instances

Question:
Use evidence from the fact that the breaking down of food into simple substances occurs in the digestive system to answer the following question. "the breaking down of food into simple substances occurs in the"

Answer:
inner sustenance canals

Question:
Use evidence from the fact that cooking food requires adding heat energy to answer the following question. "what makes food cooking possible?"

Answer:
a temperature rise on it