Q: The posterior end of a typical rib is called what? Choices: - neck - chest - bottom - head A:
head

Q: What property of warm air causes it to rise above cold air? Choices: - greater pressure - greater density - higher temperature - lower density A:
lower density

Q: Q: All animals have specialized types of what basic structures, which can then do different jobs? Choices: - proteins - muscles - atoms - cells A:
A: cells

Question: Q: What term describes the ability of matter to combine chemically with other substances? Choices: - oxidation - Diffusion - permeability - reactivity A:
Answer: reactivity

*Question*
Q: What is defined as superheated gas with a positive electrical charge? Choices: - supernova - greenhouse gas - ion - plasma A:
**Answer**
plasma

(Q).
Q: The energy changes in what reactions are enormous compared with those of even the most energetic chemical reactions, and they result in a measurable change of mass? Choices: - molecular reaction - metabolic reaction - methane combustion - nuclear reactions A:
(A).
nuclear reactions