Reading · Partie 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…
Débloque tous les examens, des simulations illimitées, les 80 étapes du jeu et plus encore.