They replace the lost ions by active uptake through active transport
of ions from the surrounding waters. This is exhibited in freshwater fishes that
actively take in these ions through the gills. Most of the ions involved in osmoregulation in freshwater are those of Na+ and Cl-.
The answer to this question is biome
Eubacteria is a right answer
D. Derived Trait
You take an ancestor and you "extract" a trait and you put that trait into the next ancestor meaning you "derive" the trait.
