A volcano is an opening, or rupture, in the surface or ...
Stratovolcanoes or composite volcanoes are tall conical ...
The Montseny Biosphere Reserve is one of the Pyrenees ...
Seismic waves are waves of energy that travel through the ...
A system of estimating and reporting wind speeds. It is ...
The Marine Reserve of Banyul-Cerbere is at the fist of ...
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