Question

Fill in the blank with--with or with out
living fossils are ancient organisms persisting in modern times ---------gradual changes

I WAN THE CORRECT ANSWER AND PLEASE HURRY
AND ALSO GIVE REASON

Answer 1

The answer would be 'without' as the organisms that lived millions of years ago have died out but some survived the test of time and lived in the depths of ocean or isolated places. Their relatives have died out and they are one of the sole survivors who have survived millenniums and date back to prehistoric times with their close relatives extinct.