Reading · Bölüm 6
When wolves were reintroduced to Yellowstone National Park in 1995, ecologists expected changes in elk populations. What they did not anticipate was the extent to which the mere presence of a predator would reshape the physical landscape. Within a decade, river banks that had been denuded by overgrazing began to…
Tüm sınavların, oyunun 80 aşamasının ve daha fazlasının kilidini aç, sınırsız simülasyon yap.