Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Horrible book!

The author can not explain the molecular aspects of biological processes well. The figures were fine but there are so many books that are far better than this. The author seriously needs to take some writing classes. I had to use another book in conjunction with this one, inorder to make sure I got the concepts correct. Compared to the other book, Eckert Animal Physiology is nothing!