Q: The rising and sinking of these can cause precipitation? Choices: - underwater currents - circular air currents - temporary air currents - global air currents A:
global air currents

Q: When an electron transitions from an excited state to a less excited state, or ground state, the difference in energy is emitted as a what? Choices: - neutron - nucleus - quark - photon A:
photon

Q: Organic substances, including proteins, carbohydrates, and oils, contain what element? Choices: - oxygen - acid - iron - carbon A:
carbon

Q: A desert is a type of what community in an ecosystem? Choices: - culture - population - colony - biome A:
biome