Q: What is the only marsupial in north america? Choices: - Raccoon - Didelphinae - Marmosa - oppossum A:
oppossum

Q: What is the name of the spacecraft that has performed the closest flyby of uranus? Choices: - Mercury 7 - centaur 2 - Zodiac 4 - voyager 2 A:
voyager 2

Q: Q: What property of carbon and other elements can be used to date fossils and rocks, among other things? Choices: - mass - full-life - magnetic force - half-life A:
A: half-life

Question: Q: What substance causes oxidation by accepting electrons? Choices: - solvents - enzymes - thermal agent - oxidizing agent A:
Answer: oxidizing agent

*Question*
Q: What color is pyrite? Choices: - blue - black - silver - gold A:
**Answer**
gold

Q: The outer layer of what anatomical structure is so tough that it keeps out most pathogens? Choices: - liver - steel - bark - skin A:
skin