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Many theories about the origin of the ocean have been proposed by scientists. The most widely acc...

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came    was coming    had come    would come  
have too many conflicting theories  do not have enough funding to continue our research  are not sure how the universe is put together  have focused our investigations on the moon and planets  
came   was coming   had come   would come  
theories of its origin and history are varied  our knowledge of it is highly insecure  only a very. small sample of it has been observed  few scientists are involved in the study of astronomy  
came    was coming    had come    would come  
growth  survival  abortion  existence  
came     was coming    had come    would come  
came  was coming  had come  would come  
They invented false theories to explain things they didn't understand.  They falsely claimed to know all about nature.  They did not believe in results from scientific observation.  They paid little attention to the problems they didn't understand.  
AND  ORI  MOVE  OUT  
would come    was coming    had come    came  

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