Question: Q: Astronomers have wondered if the universe is expanding fast enough to escape the pull of what? Choices: - kinetic energy - Coreolis effect - light - gravity A:
Answer: gravity

Question: Q: What type of symmetry do echinoderms show? Choices: - mirrored - lateral - parallel - radial A:
Answer: radial

Question: Q: A redox reaction rearranges what subatomic particles? Choices: - neutrons - water molecules - protons - electrons A:
Answer:
electrons