Something huge is melting near the North Pole.The melting is endangering animals.It hascreated __(1)__ for the area's residents.And it is causing a great __(2)__ of worry among scientists.A big meltdown is taking __(3)__ in and around Greenland.Greenland is a huge island nationnear the Arctic Circle,the cold,icy region around the North Pole.__(4)__ its pretty name,Greenlandis covered __(5)__ solid sheets of ice.In recent years,these ice sheets have been thickening in themiddle __(6)__ of heavy snowfall....