QUESTION: Fix punctuation: Polled rams have been selected and mated to Merino ewes and selection continued for the quality of pollness
ANS: Polled rams have been selected and mated to Merino ewes and selection continued for the quality of pollness.

QUESTION: Fix punctuation: Comparatively the PHN persist for a longer period and is difficult to heal and are sometimes the pain is quite unbearable
ANS: Comparatively the PHN persist for a longer period and is difficult to heal and are sometimes the pain is quite unbearable.

QUESTION: Fix punctuation: Sail around with thoughts of gleeknowing that you have the perfect gift for your best friendthis radiant 14K Gold Anchor and Ship Wheel charm
ANS: Sail around with thoughts of glee,knowing that you have the perfect gift for your best friend,this radiant 14K Gold Anchor and Ship Wheel charm.

QUESTION: Fix punctuation: He then did some of his most important work on complex analysis
ANS:
He then did some of his most important work on complex analysis.