15 – 4 There are some threats that we do face that have nothing to do with microbes. November 20, 2025 Chapter 15 - Closing Thoughts 0 Comments You need to be logged in to view this page of the textbook. Please Log In. Not a Member? Join Us Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ