Temperature Cycle of Earth is very Stable in a narrow range
This is what regulates the temperature of the earth
When the Polar Oceans are frozen, it does not snow much around the High Latitudes and ice retreats, albedo decreases and the equilibrium temperature of the earth increases until Polar Sea Ice melts and Polar ice shelves retreat and Glaciers Retreat. When the Polar Oceans are Thawed, Ocean Effect Snow covers the High Latitudes, deeper and deeper, until Ice Advances, albedo increases and the equilibrium temperature of the earth decreases until Polar Oceans Freeze again.
This cycle repeats over and over and adjusts itself to overcome any and everything that tries to push the temperature of the earth outside of the limits established by earth.
I am going to explain this same thing on the next slide, but in a different way.