CSWA Sustainability Practice Exam 2026 – Complete Prep Guide

Increased greenhouse gas emissions due to deforestation lead directly to global warming. When forests are cut down or burned, the carbon that was stored in the trees is released into the atmosphere as carbon dioxide, one of the primary greenhouse gases. This accumulation of greenhouse gases in the atmosphere enhances the greenhouse effect, trapping more heat and leading to an increase in global temperatures, which is a key aspect of global warming.

The relationship between deforestation and climate change highlights the importance of trees in carbon sequestration, a process where forests absorb carbon dioxide from the atmosphere. Without the presence of trees, not only is there less carbon storage capacity, but the emissions from deforestation contribute significantly to atmospheric carbon levels.

In contrast, improved air quality is typically associated with healthy, green ecosystems, as trees help filter air pollutants. Promotion of renewable energy sources involves transitioning to energy forms that reduce reliance on fossil fuels, which is not a direct outcome of deforestation. Lastly, deforestation often destabilizes ecosystems rather than stabilizing them, as it removes essential habitats and disrupts the balance of various species and the services they provide. Thus, the correct answer focuses on the clear and significant impact of deforestation on global climate.