text: as the amount of carbon dioxide in the atmosphere increases? a. the amount of oxygen decreases b. the earth's surface feflects more sunlight c. there is less ozone in the ozone layer d. more infrared radiation is held in the earth's atmosphere d - because carbon dioxide is a "greenhouse" gas. it traps heat.  why not the other ones: a - i thought the oxygen may decrease, because where is the dioxide coming from if not o2? but then i realized there is plenty of oxygen floating around in different froms, like anything wet. burn the wet stuff and the oxygen gets released (along with hydrogen).  b - co2 doesn't affect the amount of visible light reflected.  c - co2 doesn't intefere with the ozone