Q: Q: Bread has little holes in it from carbon dioxide produced by what? Choices: - sugar - water - bacteria - yeast A:
A: yeast

Q: Q: What happens to the density of air as the altitude decreases? Choices: - multiplies - remains the same - increases - decreases A:
A: decreases

Q: Q: Liquids that mix with water in all proportions are usually polar substances or substances that form these? Choices: - silicon bonds - atmospheric bonds - compressed bonds - hydrogen bonds A:
A: hydrogen bonds

Q: Q: Most plates are made up of a combination of what? Choices: - oceanic and reflective lithosphere - continental and battered lithosphere - continental and reflective lithosphere - continental and oceanic lithosphere A:
A: continental and oceanic lithosphere