Question

Current concentration of $C{O}_2$ in atmosphere is:

• A. 270 ppmv
• B. 350 ppmv
• C. 430 ppmv
• D. 500 ppmv

Answer 1

The correct option is C

430 ppmv

430 ppmv is the current concentration of $C{O}_2$ in atmosphere. The global concentration of carbon dioxide in the atmosphere – the primary driver of recent climate change – has reached over 400 parts per million (ppm) for the first time this year. The safe level of carbon dioxide in the atmosphere is 350 parts per million.