Hi, I have followed the "Moving Picture" Tutorial to do the taxonomy classification, and I noticed in the barplot (taxa-bar-plots.qzv) provided by the tutorial, some features can't be categorized into species or have no tags/names under the 7-level classification:
I'm not sure what this means. Does that mean the original reference database omits the species' names? or the classifier can't categorize the feature into a particular species? I really appreciate any help you can provide.