Question

what to do happen if percentage of carbon dioxide reaches 20%​

Answer 1

Answer:

we will dieꨄ︎ꨄ︎ꨄ︎ꨄ︎ꨄ︎⚤︎

Answer 2

Answer:

>100000 ppm

If CO2 levels get severe (>50,000 ppm), it can also cause you to lose consciousness. If this occurs for long enough, death is a possibility.