Pteridium aquilinum is usually separated into 12 varieties or subspecies.
Blood from donors is usually separated into three components -- platelets, plasma and red blood cells.
In zoos, sick animals are usually separated from the group and euthanized.
Flax and ramie strands, however, are usually separated into individual fibre cells, or true plant fibres.
Dancesport competitions are usually separated into two divisions, American and International, and arranged in groups of four and five dances.
Species and also genera of araneomorph spiders are usually separated by specializations of the female epigynum and male pedipalp.
Fibres are usually separated from the stalks mechanically, although in some areas retting, followed by hand stripping, is still practiced.
The couple's possessions — mugs, sunglasses, handmade cards, a stuffed squirrel, a video of "Annie Hall" — are itemized, annotated, photographed (usually), separated into lots and offered up for auction.
Europium is usually separated from the other rare earths by reducing it to the +2 oxidation state and precipitating it with sulfate ions.
He makes the obvious point that the underground and legitimate markets are related - are usually separated, in fact, by little more than temporary moral fashions - but he stops short of defining that relationship.
The courts bring together elements that are usually separated -- housing, family and drug cases -- in one small building, so people can deal with several related problems at the same time.
