*Question*
Q: Water and many metals are materials that have low resistance to electric currents and are therefore known as what? Choices: - radioactive - good insulators - electromagnets - electric conductors A:
**Answer**
electric conductors

*Question*
Q: In what organ does pepsin help break down proteins? Choices: - kidney - liver - skin - stomach A:
**Answer**
stomach

*Question*
Q: Organisms that "love" acids are known as what? Choices: - acidophobes - acidic - acid heads - acidophiles A:
**Answer**
acidophiles

*Question*
Q: What is liquid water falling from the sky called? Choices: - snow - clouds - evaporation - rain A:
**Answer**
rain