carbon dioxide on Earth has mixed with rain to dissolve
rocks; the dissolved rock and carbon dioxide eventually flow into the oceans, where they precipitate to form new terrestrial rocks, often with the help of life-forms.
二氧化碳与雨水混合溶解岩石,最后都流入海洋,在海洋里它们最终又沉淀形成新的岩石。
说明二氧化碳在岩石中累积了下来啊
其他答案无据可循