There is an online version of the textbook *Holt New York Biology: Living Environment*, published by Holt, Rinehart, and Winston. Some websites that provide access to digital versions of textbooks, such as *Amazon* or *Barnes & Noble*, may have the book available for purchase and download.
Alternatively, you can also check the official website of Holt, Rinehart, and Winston to see if they offer an online version of their textbooks. Many textbook publishers now have digital versions of their books that can be accessed online or through an app.