No, plants cannot survive in an environment with 100% carbon dioxide (CO2). While plants use CO2 as part of the photosynthesis process to create energy and produce oxygen, an atmosphere consisting solely of CO2 would not support their survival for several reasons: Lack of Oxygen: Plants require oxygen for respiration, just like animals do. In an environment with 100% CO2, there would be no oxygen available for respiration, leading to cellular damage and eventually plant death.