(Question)
Q: If a fixed amount of gas maintains a perfectly inversely proportional relationship between volume and pressure, then what else must be constant about the gas? Choices: - density - friction - surface tension - temperature A:
(Answer)
temperature

(Question)
Q: What is the process in which a solid changes directly to a gas called? Choices: - condensation - solidification - vaporization - sublimation A:
(Answer)
sublimation

(Question)
Q: Although much of the heart's basic structure is complete by the end of the fifth week, what fetal structures remain until birth or shortly after? Choices: - heart shunts - renal arteries - umbilical arteries - blood shunts A:
(Answer)
blood shunts