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What is the difference between a river and a river?

What is the role of coastlines?

Which country has the longest coastline in the world?

What are the 4 rivers?

Which country has the longest coastline in Europe?

What is the pressure of sea water?

What is the biggest problem facing our oceans today?

What is pressure underwater called?

What are the causes and effects of coastal erosion?

Why is it important to preserve coastlines?

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