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glacier


large body of  slowly moving ice

Glaciers around the world are melting.

  glacier

geologist


scientist who studies Earth's history and structure

Jason Gulley is a geologist who studies how Earth’s glaciers are melting.

geologist

moulin


waterfall inside a glacier

Scientists study moulins to see how fast glaciers are melting.

  moulin

climate change


shifts in Earth’s average temperatures and weather patterns

Scientists believe that human activity is a cause of climate change.

  climate change

sea-level rise


increasing level of ocean water, which scientists believe is due to climate change

Sea-level rise could cause flooding in cities and towns on coasts.

  sea-level rise
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