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There was once a bare rock which was invaded by moss accumulating at the beginnings of the soil. After several years enough, soil has become established that grasses begin to grow. Without the moss building up soil, the grasses would have had no chance. The establishment of the mosses on bare rock and eventual addition of grasses represents

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There was once a bare rock which was invaded by moss accumulating at the beginnings of the soil. After several years enough, soil has become established that grasses begin to grow. Without the moss building up soil, the grasses would have had no chance. The establishment of the mosses on bare rock and eventual addition of grasses represents






 
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