over the last few hundred years earthobservatory.nasa.gov/Features/CarbonCycle/page4.php منذ بداية الثورة الصناعية since the beginning of the industrial revolution 8.4 billion tons of carbon Changes in the carbon cycle (NASA) a billion tons of carbon Sinds het begin van de industriële revolutie 산업 혁명의 시작부터 40 percent a billion tons of carbon nasa Changes in the Carbon Cycle dall'inizio della rivoluzione industriale 8.4 billion tons of carbon с начала промышленной революции traps heat Graph: NASA Earth Observatory since the beginning of the industrial revolution 40 percent 産業革命の初めから over the last few hundred years Changes in the carbon cycle (NASA) earthobservatory.nasa.gov/Features/CarbonCycle/page4.php