Question: Q: Closely associated with "work", what is characterized by its many forms and the fact that it is conserved? Choices: - heating - fuel - matter - energy A:
Answer: energy

Question: Q: What mineral that occurs in bones helps combat osteoporosis? Choices: - magnesium - iron - potassium - calcium A:
Answer: calcium

Question: Q: What is the membrane that surrounds a fetus called? Choices: - cell membrane - umbilicus - umbilical sac - amniotic sac A:
Answer:
amniotic sac