Gas that has increased in our atmosphere from 300 parts to 410 parts since 1950 is : 2) carbon dioxide (CO₂). It first exceeded 300 parts per million threshold in the 1950s and today it is over 410 parts per million.
The concentration of carbon dioxide in the atmosphere is currently nearly 412 parts per million. This shows a 47 percent increase since the beginning of the Industrial Age when the concentration was nearly 280 ppm.
The atmospheric level of carbon dioxide has been rising since the 1960's. In 2021, atmospheric carbon dioxide levels reached 416.45 parts per million in comparison to 1960 levels which was 316.91 parts per million.
To know more about carbon dioxide, refer
https://brainly.com/question/14445045
#SPJ4