No one knew who he was or where he came from, but someone was doing what the police had tried in vain for over a year and finished the job within 24 hours. There was a new predator in town and he had a taste for killers. Having no clues except for the dead bodies left behind and being warned by their own experts that to hunt this ghost would be not only futile but extremely hazardous to their health, the police have no choice but to relent.

Focuses on ecology as a science, yet providesstudents with the basic background information they need to appreciate how economic and social issues impact on environmetnal problems.

Over a century ago, tall-grass prairie stretched over the most of what is now Iowa, Illinois, southern Minnesota, northern Missouri, the Dakotas, Nebraska, Kansas and Oklahoma. Today only a few scattered patches remain. The author traces the history of the prairie and examines grassland ecology.

Science stimulates curiosity and student inquiry, integrates powerful support for reading and science literacy, reaches all learners through numerous components and strategies for differentiated instruction, reinforces learning through exciting visuals and electronic components, and makes teaching science easy with a variety of teacher resources.

The ecosystem. Population ecology. The community. Comparative ecosystem ecology.