Q: Telescopes use which kind of lenses to enlarge images? Choices: - crystalline - spherical - concave - convex A:
convex

Q: Where are the two tonsils located? Choices: - sinus - nose - tooth - throat A:
throat

Q: When the volume of a gas is decreased, what happens to its pressure? Choices: - drops - LOWERS - STAYS THE SAME - increases A:
increases

Q: Which system in the body exchanges gases with the outside air? Choices: - immune - digestive - vascular - respiratory A:
respiratory