This is Biology homework. I want to solve those questions based on the materials that I will be uploaded for you. Before solve questions, you should take a look about chapters powerpoint and study guides. There are 4 powerpoint and 4 study guides for chapter 12, 13, 14, and 15. The file name of homework is (Assignments+Chapters+12-15).
Be sure, to write easy words and easy vocabularies. Also I want to be free plagiarism.