Studies in Greenland measuring the amount of carbon dioxide trapped in air bubbles and frozen before the Industrial Revolution show that the amount of carbon dioxide in the air has increased by 25 percent in the last 100 years.
(carbon dioxide; trapped; in air bubbles) (Studies in Greenland; frozen; T:before the Industrial Revolution) (Studies in Greenland; show; that the amount of carbon dioxide in the air has increased by 25 percent in the last 100 years) Context(Studies in Greenland show,List([0, 131))):(Studies in Greenland; show measuring; the amount of carbon dioxide) Context(Studies in Greenland show,List([0, 131))):(the amount of carbon dioxide in the air; has increased; by 25 percent; T:in the last 100 years)
Studies in Greenland show,List([0, 131)) Studies in Greenland show,List([0, 131))
carbon dioxide Studies in Greenland Studies in Greenland Studies in Greenland the amount of carbon dioxide in the air
trapped frozen show show measuring has increased
in air bubbles
T:before the Industrial Revolution
that the amount of carbon dioxide in the air has increased by 25 percent in the last 100 years
the amount of carbon dioxide
by 25 percent T:in the last 100 years