Find the error with subject-verb agreement. Select the incorrect verb and type it correctly.
In
2008
researchers
positively
identified
the
remains
of
Copernicus
the
sixteenth-century
astronomer
An
analysis
of
bones
found
in
Frombork
Cathedral
plus
some
hairs
in
one
of
Copernicus's
books
were
the
key
to
identifying
the
remains