What we had failed to understand was that these seasonal humidity environments of the world, the soil and the vegetation developed with very large numbers of grazing animals, and that these grazing animals developed with ferocious pack-hunting predators.
見過ごしていたことは 世界中の季節的な湿度の変化や 土壌そして植生を保つのは 莫大な数の草食動物であり それらの草食動物を 捕食する肉食動物だということです