Q: What element once commonly used in paint and gasoline has now been found to have dangerous effects? Choices: - plastic - chromium - niacin - lead A:
lead

Q: Which system transports oxygens to cells? Choices: - vascular system - nervous system - oxy system - circulatory system A:
circulatory system

Q: Q: Both energy and heat can be expressed in units of what? Choices: - amperes - velocities - ohms - joules A:
A: joules

Question: Q: What happens when water is removed from the endospore? Choices: - reversal - suspension - hibernation - its metabolism halts A:
Answer: its metabolism halts

*Question*
Q: Why do players with more mass often have a larger impact in football? Choices: - potential energy is lower - kinetic energy is lower - Velocity is larger - momentum is larger A:
**Answer**
momentum is larger

*Question*
Q: The mouth, stomach, esophagus, small intestine, and large intestine are all part of what organ system? Choices: - muscular - respiratory - lymphatic - digestive A:
**Answer**
digestive