Taxa plot- level 7

hi
That's the command
qiime taxa barplot --i-table forTaxaPlot-table.qza --i-taxonomy ../ok69_allmonth_taxonomy.qza --m-metadata-file ../mapping_file_ok69_abx__UPDATE_090817.tsv --o-visualization ok69_1Month_taxa-bar-plots.qzv

Why its possible? using dada2 Im assuming that every feature is a taxa and by combining 5 feature I'm combining 5 different taxa and that can change the result dramatically

Thank you!