Biomes (bioclimatic zones) are appropriate divisions by which to organize the natural world, because the organisms that live in each of them possess common constellations of adaptations to them, in particular to the climate of each of the zones and to the characteristic vegetation types that develop in them. ... Soils are very important because they influence the types of plants (and thus plant communities) that will grow within a particular bioclimatic zone, and as substrates to animals as well. ... Its importance is greater than the sum of its individual plant parts, as many species of anima...

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