Conclusion:
Over the past two hundred years, the colossal mountains of ice in Glacier Bay have retreated to reveal a land unsurpassed in natural wonder and rugged beauty. Today's advance or retreat of glaciers reflect many factors: snowfall rate, topography, and climate trends. Glacial retreat continues today on the bay's east and southwest sides, but on its west side several glaciers are advancing. Due to the rapid climate change, many of the icebergs are melting. The fresh water that is stored in these icebergs is than longer fresh water once it comes into contact with salt water. If the world's ice caps thawed completely, sea level would rise enough to inundate half the world's cities. Scientists call Glacier Bay a living laboratory for the grand processes of glacial retreat, plant succession, and animal dynamics. The new vegetation in the Glacier Bay National Park creates habitats for wolves, moose, mountain goats, black bears, brown bears, and other wildlife. The Bay also supports a food chain that includes salmon, bald eagles, harbor seals, harbor porpoises, humpback whales, and killer whales. Every organism living in this biome inadvertently helps another organism out in some shape or form. Humans should seriously take into account the consequences their ecological footprint if they continuously want Glacier Bay National Park to flourish in diversity.