amber230 amber230 12-09-2022 Biology contestada COâ‚‚ (parts per million) 380 340 300 260 220 180 400 HIGHEST HISTORICAL CO, LEVEL CURRENT 350 300 250 1950 Amw 200 150 100 50 Thousands of Years before today (0 = 1950) 0 what are the dependent and independent variables