What are two climate feedback mechanisms that are taking place on or around the Antarctic ice shelf?

Ice albedo. Ice is white and very reflective, in contrast to the ocean surface, which is dark and absorbs heat faster. As the atmosphere warms and sea ice melts, the darker ocean absorbs more heat, causes more ice to melt, and makes the Earth warmer overall. The ice-albedo feedback is a very strong positive feedback.

Climate change is making the ice melt faster which causes the overall earths overall temperature to rise. After ice melts it literally has nowhere else to go,so ocean levels rise which ultimately could lead to the drowning of all cities around the world. Basically killing off everyone