Respiration the release of CO, by an organism after breaking down carbohydrates into usable energy Volcanic Activit the release of CO, and other gases into the atmo-sphere through vents in Earth's crust Processes That Cause Carbon to Move out of the Atmosphere Process Description Photosynthesis the use of sunlight and CO, to produce carbohydrates SAMPLE ANSWER: SAMPLE ANSWER Dissolving: CO, dissolves in rainwater and oceans.