B
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Scientists compared fossil remains of a species
that lived 5,000 years ago with members of the
same species living today. Scientists concluded
that this species had changed very little over the
entire time period. Which statement best
accounts for this lack of change?
(1) The environment changed significantly and
those offspring without favorable characteristics
died.
(2) The environment changed significantly, but
the species had no natural enemies for a long
period of time.
(3) The environment did not change significantly
and those offspring expressing new
characteristics survived their natural enemies.
(4) The environment did not change significantly
and those offspring expressing new
characteristics did not survive.
that lived 5,000 years ago with members of the
same species living today. Scientists concluded
that this species had changed very little over the
entire time period. Which statement best
accounts for this lack of change?
(1) The environment changed significantly and
those offspring without favorable characteristics
died.
(2) The environment changed significantly, but
the species had no natural enemies for a long
period of time.
(3) The environment did not change significantly
and those offspring expressing new
characteristics survived their natural enemies.
(4) The environment did not change significantly
and those offspring expressing new
characteristics did not survive.