Global change
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For global climate change during Earth's history, see Climate change.
Global change refers to planetary-scale changes in the Earth system. The system consists of the land, oceans, atmosphere, polar regions, life, the planet’s natural cycles and deep Earth processes. These constituent parts influence one another. The Earth system now includes human society, so global change also refers to large-scale changes in society.[1]
More completely, the term “global change” encompasses: population, climate, theeconomy, resource use, energy development, transport, communication, land useand land cover, urbanization, globalization, atmospheric circulation, ocean circulation, the carbon cycle, the nitrogen cycle, the water cycle and other cycles, sea ice loss,sea-level rise, food webs, biological diversity, pollution, health, over fishing, and more.[2]
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