Which best describes 'climate change'?

The best description of 'climate change' is long-term alterations in temperature, precipitation, and atmospheric conditions on Earth. This definition captures the essence of climate change, which refers to significant shifts in average weather patterns over extended periods, typically decades to millions of years. Climate change encompasses various phenomena, including global warming, shifts in precipitation patterns, and increasing frequency of extreme weather events.

This is distinct from temporary weather changes or seasonal variations that may occur over shorter time frames. While these aspects do relate to the overall climate system, they do not fully encapsulate the long-lasting effects and global impact that climate change entails. The focus on long-term alterations emphasizes the ongoing nature of climate change and its implications for ecosystems, human activities, and the environment as a whole.