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.

填空题The glaciers have been entering oceans at a higher rate than before.

填空题According to the scientists it is the emission of CO(2 by human beings that causes the increases of CO2 levels.