Don’t ! Click on links potential environmental barriers could help u out but if you gather other information to keep on thinking what to do you will get a final decision
I think it's CARBON DIOXIDE
I am not sure.
The universal trigger for fear is the threat of harm, real or imagined. This threat can be for our physical, emotional or psychological well-being. While there are certain things that trigger fear in most of us, we can learn to become afraid of nearly anything.
