Q: What do electromagnetic receptors detect? Choices: - dangerous radiation - background radiation - subtle radiation - electromagnetic radiation A:
electromagnetic radiation

Q: At high altitudes, acclimatization increases red blood cells, so there is more what to help transport the available oxygen? Choices: - platelets - plasma - leukocytes - hemoglobin A:
hemoglobin

Q: Where does oxygen enter the blood? Choices: - in the heart - in the veins - in the liver - in the lungs A:
in the lungs

Q: How many miles is the distance between the earth and sun? Choices: - 91 - 82 - 78 - 93 A:
93