QUESTION: Fix punctuation: Heartworm treatment can be very dangerous for some dogs so heartworm elimination should only be done under the guidance of a veterinarian
ANS: Heartworm treatment can be very dangerous for some dogs, so heartworm elimination should only be done under the guidance of a veterinarian.

QUESTION: Fix punctuation: The newspaper will with its meagre means support everything which is true clean and righteous
ANS: The newspaper will with its meagre means support everything which is true, clean and righteous.

QUESTION: Fix punctuation: Transfer from Amsterdam Port to Rotterdam RTM airport
ANS: Transfer from Amsterdam Port to Rotterdam (RTM) airport

QUESTION: Fix punctuation: Earlier in the history of the Earth it moved faster By studying the continental drift and fossils proof of decreasing gravity can be established
ANS:
Earlier in the history of the Earth it moved faster. By studying the continental drift and fossils, proof of decreasing gravity can be established.