'were mostly represented' is a correct and usable sentence in written English.
You can use it to refer to a group of people, objects, ideas, or events that have been presented with a certain level of presence. For example, "The people most affected by the policy change were mostly represented in the discussion."
They were mostly represented by lignin derivatives, fatty acids, aliphatic biopolymers, hydrocarbons, and alcohols.
Plant species identified under the important minor pollen types (3 15%) were mostly represented by family Fabaceae, Asteraceae, Malvaceae, Myrtaceae, Cucurbitaceae, Euphorbiaceae, Rubiaceae, Brassicaceae, Combretaceae, Lamiaceae, Poaceae, Rosaceae, Solanaceae and Verbenaceae.
Interestingly, the water molecule bridging events or solvent structure around free Ley observed by the MD simulations were mostly represented by water molecules and a few binding site residues in the hu3S193 Fab-Ley complex at 1.9 Å resolution [25], [47].
These genera were mostly represented by two mitochondrial genes, usually the ribosomal genes 12S and 16S.
Furthermore, adipocytic elements were mostly represented by large lipid vacuoles next to far small irregularly shaped adipocytes.
LTS-ms were mostly represented by diarrhea and/or stomatitis/mucositis associated to nausea, vomiting and/or asthenia.
In the Latham version, the heavenly host is mostly represented by collaged books.
Again, the E.U. members are mostly represented by junior ministers and officials.
For more than 30 years, the state had not been present in Rio's favelas, and now it is mostly represented by military police.
For more than 30 years the state has not been present in the Rio favelas, and now the state is mostly represented by the military police.
Sediments formed under less-restricted drift conditions began approximately 125 million years ago and are younger to the north, where they are mostly represented by clastic marine deposits.
