Carbon dioxide emissions.
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pollution
Getting it open. The Troll }<)
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Pollution Growth.
population growth
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Western and Eastern Europe.
I also don't know this answer.
Four major landscape units of Europe are as follows:The North-western HighlandsThe central LowlandsThe Central UplandsThe Alpine mountains
The Marine Climate is a major climate of Europe. It is the climate of Western Europe.
There are many important environmental issues. Four major ones would beGlobal climate changeDesertificationSpecies lossOverpopulation
china has a lot of pollution in the air from its factories