Question

What evidence is there that the o'higgins glacier is being affected by global warming? view available hint(s) what evidence is there that the o'higgins glacier is being affected by global warming? there is no evidence that the changes of o'higgins are being affected by global warming. it has retreated nine miles in the past 100 years because of melting. it has retreated nine miles in the past 100 years because of a dramatic decrease in snowfall at the source of the glacier. it has grown nine miles in the past 100 years because warmer temperatures have caused melting along the edge of the glacier, allowing it to move more quickly. it has grown nine miles in the past 100 years because of increased snow pack at extremely high elevations?

Answer 1

The correct answer is - there is no evidence that the changes of O'Higgins are being affected by global warming. It has retreated 9 miles in the past 100 years because of melting.
O'Higgins, as well as the other glaciers in Patagonia and Tierra del Fuego, are still a mystery to scientists as to why are they retreating. They suspect that maybe the global warming is the main cause, but there is no enough data available because of the remoteness and harshness of the region, so for now, it's all just speculation until there's enough data available to make a scientifically proven statement.