*Question*
Q: What prepares the body for fight or flight during emergencies? Choices: - abnormal division - metabolic response - adrenal mechanism - sympathetic division A:
**Answer**
sympathetic division

*Question*
Q: What is the basic chemical building block of matter; it is the simplest chemical substance? Choices: - atoms - helium - hydrogen - element A:
**Answer**
element

*Question*
Q: What man-made substance tends to break down ozone in the stratosphere? Choices: - gasoline - steel - plastic - cfcs A:
**Answer**
cfcs

*Question*
Q: Systemic veins return blood low in what to the right atrium? Choices: - dioxide - nutrients - nitrogen - oxygen A:
**Answer**
oxygen