Q: Q: The layers of the atmosphere correspond with what changes with altitude? Choices: - friction - nitrogen - oxygen - temperature A:
A: temperature

Q: Q: Each new horizontal row of the periodic table corresponds to the beginning of a new period because a new principal energy level is being filled with what? Choices: - protons - photons - neutrons - electrons A:
A: electrons

Q: Q: Rna and dna are types of what biochemical compounds containing the elements carbon, hydrogen, oxygen, nitrogen, and phosphorus? Choices: - hormones - nitrous acids - amino acids - nucleic acids A:
A: nucleic acids

Q: Q: An object's energy due to motion is known as? Choices: - residual energy - inertia - thermodynamic energy - kinetic energy A:
A: kinetic energy