Q: Q: What is the term for how much matter is packed into a given space? Choices: - opacity - volume - mass - density A:
A: density

Q: Q: What is the name of a joint in which one bone rotates in relation to another bone? Choices: - gliding - hinge - ball and socket - pivot joint A:
A: pivot joint

Q: Q: What form when water vapor condenses in the air around specs of matter? Choices: - humidity - storms - condensation - clouds A:
A: clouds

Q: Q: What is the second line of defense? Choices: - rejection of foreign bodies - fight or flight - immune response - inflammatory response A:
A: inflammatory response