Tsunami

Tsunami waves are very high waves of immense destructive power.

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The water cycle (basic)

Water on Earth is in a continuous state of change. The water cycle includes processes...

Weather fronts

When masses of cold and warm air meet, weather fronts develop.

The water cycle (intermediate)

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Loess

It is a sedimentary rock made up of loosely structured, rough grains of rock.

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Soil is the loose, uppermost, fertile layer of the Earth’s crust.

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The phosphorus cycle describes the movement of phosphorus through the lithosphere,...

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