It is caused by <span>Carbon dioxide, Ozone, Methane and Water vapor!</span>
The statement above is TRUE.
Depressants has many negative effects, these include depression, chronic fatigue, breathing difficulties, sleep problems, etc.
Long time use of depressants can affect the immune system, weakening it considerably and making the body susceptible to many diseases including cancer.
Write pangea in google images and search (: I cant draw if for you, but if i could, i would!