Q: Living things get energy from food in a process called respiration, which releases what gas back into the atmosphere? Choices: - oxygen - hydrogen - nitrogen - carbon dioxide A:
carbon dioxide

Q: Like the other outer planets, neptune has rings of ice and what? Choices: - gas - mercury - glass - dust A:
dust

Q: Body plans do provide a succinct way to compare and contrast what? Choices: - degenerative animal features - missing animal features - distinctive animal features - key animal features A:
key animal features

Q: What carries warm or cold water throughout the world's oceans? Choices: - gravity - pipes - earth rotation - ocean currents A:
ocean currents