Foreign Invaders: Non-Native Species and their Effects on North America's Ecosystems

Foreign Invaders is a reproducible reading-and-discussion text that features 20 stories about non-native species and their effect on North America’s ecosystems, with exercises. It can be used for low-intermediate to intermediate students. Units include Burmese Python, House Sparrow, Dutch Elm Disease, Garlic Mustard, Red Imported Fire Ant, Mute Swan, Yellow Starthistle, Wild Boar, Water Hyacinth, Zebra Mussel, Whirling Disease, Africanized Honey Bees, Green Crab, Plum Pox, American Bullfrog, Phragmites Australis, Asian Long-Horned Beetle, Asian Carp, Purple Loosestrife and West Nile Virus. There is a complete answer key.