Nest openings in the ground or in buildings can be recognized by observing the wasps entering and leaving.
(Nest openings in the ground or in buildings; can be recognized; ) (Nest openings in the ground or in buildings; by observing; the wasps entering and leaving) (the wasps; entering; )
Nest openings in the ground or in buildings Nest openings in the ground or in buildings the wasps
can be recognized by observing entering
the wasps entering and leaving