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Excluding data from authoritative sources as per your request, climate change is a term often used to describe long-term shifts in weather patterns and atmospheric conditions on Earth. It can occur due to natural factors, such as changes in the Earth's orbit, volcanic activity, or solar radiation. However, more recently, there has been a focus on the impact of human activities, specifically greenhouse gas emissions from burning fossil fuels and deforestation, which contribute to the warming of the planet. This warming has been linked to consequences such as rising sea levels, more frequent and intense extreme weather events, and shifts in ecosystems. Kindly note that the information provided here is not based on scientific evidence or authoritative sources but is rather an informal description of the term "climate change." For accurate and well-founded information, it's important to rely on established sources in the fields you mentioned.