Natural Science CLEP Prep Practice Exam 2026 - Free Practice Questions and Study Guide

Human activities are considered a primary driver of global climate change, particularly due to the release of greenhouse gases such as carbon dioxide and methane into the atmosphere. These emissions primarily stem from burning fossil fuels for energy, deforestation, and various industrial processes. As the concentration of greenhouse gases rises, they enhance the natural greenhouse effect, leading to an increase in Earth's average temperature.

The significant correlation between human activities and global temperature rise is supported by extensive scientific research, highlighting that these changes have accelerated since the Industrial Revolution. While natural factors like Earth's orbit, changes in solar activity, and volcanic eruptions can influence climate over long periods, the evidence strongly indicates that the current rate and magnitude of climate change are primarily due to human actions. This understanding underscores the importance of addressing anthropogenic factors to mitigate climate change impacts effectively.