1. Life on the planet will survive glacial melt but...
It will be dramatically and forever changed. And the effect on human civilization is certainly yet to be determined.
When I was young I used to think that people would all basically freak out and make dramatic changes when it became obvious that CO2 induced warming was really taking place. Now I realize that that view was quite naive. Still I have a hard time accepting the level of obfuscation that is perpetrated by the fossil carbon exploiters interests'.
They only call it class warfare when we fight back!