George Johnson 
Essentials of the Living World ISE [EPUB ebook] 

George Johnson has written this non-majors textbook from the ground up to be an engaging and accessible learning tool with an emphasis on "how things work and why things happen the way they do." Essentials of The Living World focuses on concepts rather than terminology and technical information, and features a straightforward, clear writing style and a wide variety of media assets to enhance the content of the textbook.