Can't do this today, please help!
1a Study about carbon dioxide that's broken down protective cover(6)
10a English course for one Gaelic speaker,perhaps (5)
12a Court action that is faulted by judge if too long, say (7)
24a Impressive contract carried back by the Irish last year(5,4) Is this GRAND SLAM and, if so, why?
27a Plagiarised something from German cookbook, we hear (6)