Translations:Benutzer:Arian/Klett-Mini-Test/435/en

All that lives stands in its very being in relationship to the elements. The more balanced earth, water, air and warmth are in their relation to one another, the more manifoldly can life bring itself to appearance. This fact speaks itself out clearly in the contrast between tropical rainforest and sandy desert. In the former case the diversity of plant species, compressed into the smallest space, reaches a maximum — in the tropical primeval forest of Brazil, for instance, over a hundred tree species per hectare — while in the latter, sparse or no plant growth comes forth at all.