Question

Living fossils are ancient organisms persisting in modern times ______________ gradual morphological changes

Answer 1

Answer:

undergoing

Explanation:

Hope this helps

Answer 2

Answer:

Living fossils are ancient organisms persisting in modern times without gradual morphological changes

Explanation:

• 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.

hope this helps ...

...........................please mark BRAINLYY..