Explain how human activities contribute to the increase in greenhouse gas concentrations.

Human activities such as burning fossil fuels for energy, deforestation, and industrial processes release significant amounts of carbon dioxide and methane into the atmosphere. These actions increase the concentration of greenhouse gases, enhancing the greenhouse effect and contributing to global climate change.

This question assesses the student's ability to connect human actions with environmental impacts. The answer highlights specific activities that lead to increased greenhouse gas emissions, demonstrating an understanding of the causes of climate change.