Factors of warming

The duration of solar radiation, the angle of the Sun's rays and the surface albedo all have an effect on the extent of warming.

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Vandcyklusen (mellemniveau)

Vand på jorden er i en kontinuerlig tilstand af forandring. Vandsyklusen indbefatter...

The pollution of natural waters

Water is one of our key natural resources; we must protect it vigorously.

Mediterranean climate

It is characterised by dry, hot summers and mild winters.

From the Sahara to Amazonia

Sahara sand carries nutrients essential for the Amazonian flora.

Dannelse af stratovulkaner

Stratovulkaner består af lag af vulkansk aske, rester, og lava.


People have always preferred to settle near rivers. What are the advantages and disadvantages of...

Natural gas and petroleum

Natural gas and petroleum are among the most important sources of energy and raw materials today.

Forkastning (mellemniveau)

Lodrette kræfter der kan bryde lag af sten op i blokke, som derefter bevæger sig lodret...

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