This is called the Greenhouse Effect. The amounts of some of these greenhouse gases are increasing, because of human activities - a form of air pollution really. The resulting enhanced greenhouse effect is also known as Global Warming. This is a serious problem, because predictions are that the polar caps will retreat and the melting water will cause a rising sea-level, thus creating a serious danger of floods in many parts of the world. We should also be prepared for climate changes, resulting from changes in prevailing wind directions and sea currents.
Water vapor is the most important greenhouse gas, and carbon dioxide comes second.
However, when we look at global warming, then carbon dioxide comes first, because of its fast rising level. These fungi have a special kind of respiration, but in fact we all exhale carbon dioxide. It is a controled combustion, otherwise not much different from what happens, more explosively, in a fire. But it may also point to the left, and then we are talking about photosynthesis. Out of Balance Both the above formulas can simply be combined into one, and you may regard them as a single dynamic system.