*Question*
Q: The abundance of this substance in the atmosphere is what most scientist agree that is causing global warming? Choices: - argon - iron oxide - liquid dioxide - carbon dioxide A:
**Answer**
carbon dioxide

*Question*
Q: Displacement, velocity, acceleration, and force are examples of what type of quantity that has magnitude and direction? Choices: - cycles - wave - frequency - vector A:
**Answer**
vector

*Question*
Q: The soil beneath a deciduous forest is called what? Choices: - cocklebur - forest floor - trichina - pedalfer A:
**Answer**
pedalfer

*Question*
Q: Nerves of the hands, arms, feet, legs, and trunk are part of what system? Choices: - urinary system - circulatory system - cardiovascular system - peripheral nervous system A:
**Answer**
peripheral nervous system