The aforementioned Geography teacher either:
a:/ was trying not to worry you.
b:/ doesn't know what they're on about, probably majored in geology or cartography and muddles their way through the rest of the syllabus.
NOW is the time to be worrying about this effect that WE are having on this planet.
You think it's all going to be happy *beepy* days when ____ starts crumbling around you?
When the temperature gets so high around the equator that the ground gets scorched beyond recognition and can no longer support life?
TREES ARE DEAD and no more can replace them?
Increasing global demography and imbalanced O²:CO² ratio in the air is going to STRANGLE LIFE SLOWLY ON THIS PLANET.
In the meantime of course, the more temperate areas of the globe will be flooded and freeze. RIGHT LAUGH.
All of this is assuming that UVA, UVB and GCR's don't anhiallate life on Earth first, due to greatly reduced ozone protection.
GCR's (Galactic Cosmic Rays) are really *beep* nasty.
You know you're made up of billions of pretty little di-helical DNA strands?
Well FORGET ABOUT THEM, cos GCR's rip through them like a samurai sword through lace. You will MELT to the consistency of custard.
I think some people on here better wise up. QUICKLY.
DO NOT IGNORE ME.
I can't believe you are all so selfish.
"It's alright for us, it'll never happen to us, I'm not going to have children so I don't care, It won't happen for hundreds of years, tree-huggers, enviro-freaks, blah, blah, blah...."
My apologies go out to those that actually give a fuck.
IT'S JUST THAT YOU BIGOTTED, IGNORANT PEOPLE MAKE ME SICK TO THE CORE!!!
You deserve to perish cos you just don't care.
Well, I hope that you realise fully what you've done and pay heavily for it before you hit the snooze button.
Amen.