Question: Noticeably more megapixels photo
Please fix the punctuation.
Fixed: [Noticeably more megapixels (photo)]

Question: When xyzdoc file is deleted the file system simply renames that specific file as aydoc and this file cannot be recognized by the Window OS as a result of that file become inaccessible
Please fix the punctuation.
Fixed: [When xyz.doc file is deleted, the file system simply renames that specific file as ay.doc and this file cannot be recognized by the Window OS as a result of that file become inaccessible.]

Question: Completion of the transaction is expected to take place in the first half of 2013 following approvals from relevant competition authorities
Please fix the punctuation.
Fixed: [Completion of the transaction is expected to take place in the first half of 2013, following approvals from relevant competition authorities.]

Question: Barbie was invited to a wedding party and she doesnt know what to dress
Please fix the punctuation.
Fixed:
[Barbie was invited to a wedding party and she doesn't know what to dress.]