Q: What element is all life built around? Choices: - hydrogen - neon - oxygen - carbon A:
carbon

Q: Dessication is an extreme and usually fatal form of what in animals? Choices: - diarrhea - depletion - starvation - dehydration A:
dehydration

Q: Q: What are angiosperms most important function to humans? Choices: - oxygen production - gasoline - water filtration - food A:
A: food

Question: Q: To measure what changes that occur in chemical reactions, chemists usually use a related thermodynamic quantity, calledenthalpy? Choices: - ion exchange - evaporation - entropy - energy A:
Answer: energy

*Question*
Q: The point in front of a mirror where the reflected rays intersect is known as what? Choices: - reflective point - boundary point - periodic point - focal point A:
**Answer**
focal point

(Question)
Q: What system plays a critical role in the regulation of vascular homeostasis? Choices: - endocrine system - circulatory system - renal system - nervous system A:
(Answer)
nervous system