Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An "unfocussed" Natural History of Australia.

The natural history of Australia is described in a light and accessible style in this book by respected naturalist Tim Berra. He attempts in the early chapters to describe the geologic history of this now arid continent and later relate it to the animals and plants found in Australia. However, the book falls short by trying to do way too much in too short a space. The author resorts to a literary form of cherry picking and loses his systematic thread as he deals with the diversity of flora and fauna. An example is the chapter entitled "Some Interesting Invertebrates". The Great Barrier Reef is especially poorly dealt with as it is treated as a series of, mainly vertebrate, photo-ops and largely ignores the intricacies of the ecosystem.The appendices degenerate into a short overview of modern Australian culture and as such are out of place in what is supposedly a book on biology.