Yes, that is true. What is your question?
Well living is having life while biotic is pertaining, or produced by life or living organisms. :)
An inactive(dead) version of the disease is given, so that the body can build antibodies but now suffer from the symptoms
You could argue that in early succession areas species may have not been adapted or evolved. In Darwin's theory, life began in a shallow, warm pond. If that is the case, species would then venture deeper when their area they are in is suitable and having success
