Q: Q: Oxygenated air, taken in during inhalation, diffuses across the surface of the lungs into the what? Choices: - liver - brain - proteins - bloodstream A:
A: bloodstream

Q: Q: Increasing what property of dirt would make it easier to rinse off your hands? Choices: - turbidity - density - viscosity - solubility A:
A: solubility

Q: Q: What happens when alkanes are mixed with oxygen at room temperature? Choices: - single replacement - redox - combustion - no reaction A:
A: no reaction

Q: Q: The vector of what organism is significant on a map showing the location of malaria? Choices: - virus - worm - fungi - mosquito A:
A: mosquito