Myliobatoidei
hope this helps:))
Both are under the phylum annelida
Polychaeta are more numerous than oligochaeta
Example of polychaeta is sand worm
While oligochaeta is earth worm
Both are free living organisms
The experiment must be the same each time to get reliable results
It is the Watt per square meter, or W/m2.
So that there is a uniform system in which all people can use without conversions or mistakes in such conversions.