Climate change represents a change in the climate due to the alteration of the composition of the earth's atmosphere. The "World meterorological organization" (WMO), the United Nations Convention on Climate Change2 (UNFCC), the IPCC3, International Panel on Climate Change define climate change as: A statistically significant variation in the average state of the climate or its variability, persisting for an extended period, caused both by its natural variability and by human activity, which alters the composition of the earth's atmosphere. The UNFCC argue that the negative effects of climate change are causing irreversible damage to the ecosystem, the socio-economic system and animal and human well-being
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