Q: What kind of messages do neurons send? Choices: - minor messages - Neurotic messages - digestive messages - electrical messages A:
electrical messages

Q: Free atoms are spherical in shape, so the relative sizes of the elements can be compared by looking at each atom's atomic what? Choices: - weight - axis - angles - radius A:
radius

Q: Q: Oceans are made of a solution of what? Choices: - water and carbon - salt and carbon - salt and algae - salt and water A:
A: salt and water

Question: Q: Major exchange pools of carbon include organisms and what else? Choices: - location - duration - the intensity - the atmosphere A:
Answer: the atmosphere

*Question*
Q: What is the term for a loop in which a product feeds back to control its own production? Choices: - Recondition Mechanism - load mechanism - Adaptive Mechanism - feedback mechanism A:
**Answer**
feedback mechanism

*Question*
Q: Visible light is the narrow segment of what, to which the normal human eye responds? Choices: - molecular spectrum - radio spectrum - phenomena spectrum - electromagnetic spectrum A:
**Answer**
electromagnetic spectrum