<human>:  What is the impact of human activity on climate change?
<bot>: The impact of human activity on climate change is far-reaching and significant. Human activities, such as burning fossil fuels, releasing pollutants into the atmosphere, and deforestation, are contributing to a rapid warming of the Earth's climate. This warming of the planet is contributing to increased temperatures, higher sea levels, and more frequent and extreme weather events, among other effects. Ultimately, human activity is contributing to long-term changes in the global climate, which can have disastrous impacts on ecosystems and human populations around the world.