The Biosphere 2 project,in Tucson,Arizona,was an experiment involving a large sealed terrarium with humans and photosynthetic plants living in balance.Why did the project have to be interrupted after only a few months? A) Levels of CO₂ rose to dangerous levels. B) The humans ran out of food. C) The plants stopped producing oxygen. D) The rate of photosynthesis was too high.

Question

Quizplus · Accepted Answer

The levels of CO₂ (carbon dioxide) rose to dangerous levels, leading to health issues for the participants and a decrease in the amount of oxygen being produced by the plants. This forced the experiment to be temporarily interrupted.

The Biosphere 2 Project,in Tucson,Arizona,was an Experiment Involving a Large