What this means in practice is that we enter a minefield where we start to lose major ecosystems as temperatures continue to rise.
This makes it incredibly important to do everything we can to limit the amount of additional warming we see; each 1/10 of a degree adds to the risk.
Many scientists believe we’re already well into a man-made extinction event. Species are going extinct 35x faster than they have in the last million years. And the mass extinction before the Triassic Period killed 90% of all life and took a mere 10 degree rise