The environmental concern for climate which directly related to the growing urban population of the world is melting glaciers.
What causes glaciers to melt is CO₂ emissions. It is the atmospheric concentration of carbon dioxide and other greenhouse gases (GHGs) caused by industry, transport, deforestation and burning fossil fuels, amongst other human activities, warm the planet and cause glaciers to melt.
Human activities are at the root of this phenomenon. Respectively, since the industrial revolution, carbon dioxide and other greenhouse gas emissions have raised temperatures, even higher in the poles, and as a result, glaciers are rapidly melting, calving off into the sea and retreating on land.
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