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➔ Melting of the polar ice sheets and mountain ice and glaciers is increasing the amount of water supplied to the oceans, causing sea-levels to rise relative to land

➔ The oceans heat up together with the atmosphere as the planet warms, and in so doing expand, leading to a greater and growing sea-level rise effect

➔ The rate of global sea-level rise is gradual—currently about 1cm every three years—but the effects are so comprehensive that its costs are already large-scale and growing

➔ Tackling sea-level rise is a monumental challenge and will significantly inhibit development in coastal areas attempting to stem growing damage