QUESTION: Fix punctuation: The history of carbon dioxide and climate usually starts with the Swedish scientist Svante Arrhenius who in 1896 published a paper arguing that increased levels of carbon dioxide could raise global temperatures
ANS: The history of carbon dioxide and climate usually starts with the Swedish scientist, Svante Arrhenius, who in 1896 published a paper arguing that increased levels of carbon dioxide could raise global temperatures.

QUESTION: Fix punctuation: To begin your free file analysis simply draganddrop your D80 file inside the dotted lines below or click Browse My Computer and select your file
ANS: To begin your free file analysis, simply drag-and-drop your D80 file inside the dotted lines below, or click "Browse My Computer" and select your file.

QUESTION: Fix punctuation: Exercises are accompanied by a singer and music located in the Gallery that marks the rhythm of the participants
ANS: Exercises are accompanied by a singer and music, located in the Gallery, that marks the rhythm of the participants.

QUESTION: Fix punctuation: Your complaints are for me signs that you are unhappy with yourself
ANS:
Your complaints are for me signs that you are unhappy with yourself.