human
I've been hearing about the global warming issue. Is it true that global warming is caused by humans?
assistant
It’s true that human activities are contributing to climate change, but there are many other factors involved as well. Climate change is a complex phenomenon with multiple causes and effects. The most important factor in causing climate change is the increase in greenhouse gas emissions from burning fossil fuels, deforestation, and industrial processes. These gases trap heat in the atmosphere and cause temperatures to rise. Other contributors include natural changes in the Earth's orbit around the sun, volcanic eruptions, and changes in solar activity.