Question: What gas is necessary for plants to perform photosynthesis?
Answer: Carbonic-acid gas; Co2; Carbon (IV) Oxide; Carbonic gas; CO²; Acidum aereum; ATCvet code QV03AN02; Carban dioxide; R-744; O=C=O; Partial pressure of carbon dioxide; Acidum mephiticum; Fixed air; Solid carbon dioxide; Carbonic anhydride; Carbondioxide; Carbon Dioxide; CO₂; Soda gas; R744; Carbon dioxide partial pressure; ATC code V03AN02; E290; CO2; Carbon dioxide; Carbonic acid gas