If the Power Fails and the Lights Go Dark, What

Question

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.

Accepted Answer

When the power fails and lights go dark, there will be no photosynthesis happening, which is the process by which plants use CO₂ and produce oxygen. As a result, the CO₂ levels will start to rise as a result of the respiration of animals and humans in the area. This will cause a decrease in the level of oxygen, which can be dangerous for humans and animals.