The ecological consequence of deforestation on atmospheric CO2 levels is significant, as trees act as carbon sinks, absorbing CO2 during photosynthesis. When forests are cleared, not only is this carbon storage capacity lost, but the carbon stored in trees is released back into the atmosphere. This process contributes to increased greenhouse gas concentrations, exacerbating climate change and its associated impacts, such as altered weather patterns and biodiversity loss. Reducing deforestation is vital for mitigating climate change and maintaining global ecological balance.