Q: The first period of the paleozoic era was called what? Choices: - carboniferous - permian - ordovician - cambrian A:
cambrian

Q: What property of certain states of matter can be given in units of millimeters of mercury? Choices: - solvency - gravity - velocity - pressure A:
pressure

Q: Q: What is one major cause of skin cancer? Choices: - visible light - sunscreen - infrared light - ultraviolet light A:
A: ultraviolet light

Question: Q: What is the ph of pure water? Choices: - 5 - 4 - 2 - 7 A:
Answer: 7

*Question*
Q: What is the name of the small bumps that contain taste buds and covers the tongue? Choices: - lingual tonsils - palatine tonsils - cuticle - papillae A:
**Answer**
papillae

*Question*
Q: For a given amount of solute, do smaller particles have a greater or lesser surface area? Choices: - lesser - equal - neither - greater A:
**Answer**
greater