If the Power Fails and the Lights Go Dark, What

question 14

Multiple Choice

If the power fails and the lights go dark, what will happen to CO₂ levels?

• A) CO₂ will rise as a result of both animal and plant respiration.
• B) CO₂ will rise as a result of animal respiration only.
• C) CO₂ will remain balanced because plants will continue to fix CO₂ in the dark.
• D) CO₂ will fall because plants will increase CO₂ fixation.
• E) CO₂ will fall because plants will cease to respire in the dark.