Question: Q: What arteries carry oxygen-poor blood away from the heart to the lungs? Choices: - subclavian - femoral - aorta - pulmonary A:
Answer: pulmonary

Question: Q: In an acidic medium, add which ions to balance? Choices: - helium - magnesium - calcium - hydrogen A:
Answer: hydrogen

Question: Q: Wave amplitude and wavelength are two important measures of what? Choices: - wave sound - wave speed - wave harmfulness - wave size A:
Answer:
wave size