Select all the correct answers. which two inferences could be drawn from the statistics represented in the graph? a.) plants are not processing carbon dioxide as they used to in the past. b.) recent industrialization and urbanization are likely to have increased carbon dioxide levels. c.) the spike in carbon dioxide levels is permanent, and nothing can be done to fix it. within the next few years, carbon dioxide levels will naturally decrease to a normal level. d.) the carbon dioxide levels will continue to rise in the absence of conservation efforts. e.) the carbon dioxide levels will continue to rise in the absence of conservation efforts.