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.
Apa yang gagal kita pahami adalah kelembapan musiman di bumi, tanah dan vegetasi berkembang bersama sejumlah besar hewan yang merumput, dan hewan-hewan yang merumput ini menimbulkan minat sejumlah pemangsa yang kejam.