What is bad about carbon-dioxide getting released into the atmosphere?

Answer 1

Carbon dioxide (CO2) is a powerful greenhouse gas. When man releases CO2 into the atmosphere it comes from burning fossil fuels (coal, oil and natural gas), and that carbon has been safely stored underground for millions of years. So this is extra CO2.

The normal carbon cycle, which moves CO2 in and out of the atmosphere, is not able to cope with this extra load, so it stays in the atmosphere. Greenhouse gases capture infrared radiation and so the heat warms the earth. More CO2 means more heat, which is causing global warming.

Answer 2

Carbon dioxide released into the atmosphere contributes to the greenhouse effect, trapping heat and leading to global warming. This can result in climate change, causing more frequent and severe weather events, rising sea levels, and disruption of ecosystems.