Species may compete in many ways--for space, for nesting or sleeping sites, for shade, for warmth, for water, for anything that they need that may be in short supply--but the most common arena of competition is likely what they eat.
(they; eat; ) (the most common arena of competition; is; likely what they eat) (Species; may compete; ) Context(Species may compete,List([0, 19))):(they; need; that may be in short supply) Context(Species may compete they need,List([0, 137))):(that; may be; in short supply)
Species may compete,List([0, 19)) Species may compete they need,List([0, 137))
they the most common arena of competition Species they that
eat is may compete need may be
likely what they eat
that may be in short supply
in short supply