Notes

31 p. : col. ill., col. maps The threat posed by the arrival and spread of exotic pests, such as dangerous insects and animals like possums and rabbits, is becoming one of New Zealand's most serious conservation problems, not just for the environment but increasingly for the economy. Examines the effects such invaders are having and the ways that humans can attempt to control them using science and technology. Includes exercises and activities. Suggested level: secondary