Q: Q: Planes fly in what layer of the atmosphere because there is less friction and turbulence? Choices: - mesosphere - ozone layer - crust - stratosphere A:
A: stratosphere

Q: Q: The chemical used by the ants to weed their garden turns out to be what kind? Choices: - sulfide acid - nitric acid - sealant acid - formic acid A:
A: formic acid

Q: Q: What is the main function of the cardiovascular system? Choices: - respiration of air - excretion of food waste - coordinate bones and muscles - transporting substances around the body A:
A: transporting substances around the body

Q: Q: Falling onto what joint can fracture the distal humerus? Choices: - thumb - knee - Foot - elbow A:
A: elbow