Question: Q: In the body, oxygen is used by cells of the body's tissues and carbon dioxide is produced as what? Choices: - oxygen - fuel - food - waste product A:
Answer: waste product

Question: Q: Ejaculation occurs when muscle contractions propel sperm from where? Choices: - cervix - penis - urinary track - epididymes A:
Answer: epididymes

Question: Q: Which types of muscles cause bones to move when they retract? Choices: - working muscles - active muscles - bone muscles - skeletal muscles A:
Answer:
skeletal muscles