(Question)
Q: Terrestrial arthropods generally have internal surfaces specialized for what? Choices: - water uptake - food gathering - protection - gas exchange A:
(Answer)
gas exchange

(Question)
Q: When it was found that, without the force of gravity exerting pressure on the bones, bone mass was lost in astronauts, what kind of exercise provided an antidote? Choices: - aerobic - anaerobic - sedentary - resistive A:
(Answer)
resistive

(Question)
Q: What is the common name for the midpoint between high and low tide? Choices: - middle level - clouds level - floods level - sea level A:
(Answer)
sea level