Estrogen causes developmental changes, including the . broadening of the shoulders and widening of the hips growth of facial hair and the broadening of the shoulders widening of the hips and the development of breasts development of breasts and the growth of facial hair

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

that's all i luck!