(Question)
Q: Each kidney is supplied by a renal artery and what else? Choices: - spinal cord - brain vein - coronary artery - renal vein A:
(Answer)
renal vein

(Question)
Q: The brain and spinal cord are part of what system? Choices: - cardiovascular system - digestive system - immune system - central nervous system A:
(Answer)
central nervous system

(Question)
Q: What forces in liquids are strong enough to keep them from expanding significantly when heated? Choices: - particles forces - outermolecular forces - gravitational forces - intermolecular forces A:
(Answer)
intermolecular forces