Glaciers are much thicker than previously thought, which means ______into the ocean.

填空题The sea level rise is mainly caused by______ triggered by unchecked greenhouse gas emissions.

填空题According to the scientists at Hawaii’s Mauna Loa Observatory, the average CO2 levels increased by ______in 2003.

填空题An international organization should be legally built to prevent countries from emitting greenhouse gases.

填空题The Pine Island Glacier is entering the ocean at a rate of______.

填空题The October 11 Guardian claimed that the rate of CO2 accumulation was increasing at an alarming rate in 2002 and 2003.