Answer:
Taxonomy
Explanation:
Taxonomy is the science of naming, defining and classifying groups of biological organisms on the basis of shared characteristics.
The principal ranks in modern use are domain, kingdom, phylum, class, order, family, genus and specie
The answer is true. This is because well it is, Mate.
What is waste water treatment ?
“The major aim of wastewater treatment is to remove as much of the suspended solids as possible before the remaining water, called effluent, is discharged back to the environment.”
My source is from www.usgs.gov
It is b . Because three of them are less than 90.