QUES: Something that you wanted to do for a long time

correct the punctuation.

CORRECTED: Something that you wanted to do for a long time?

QUES: Registration 16 August 2008 1851

correct the punctuation.

CORRECTED: Registration 16 August 2008 18:51

QUES: The latter shield the tissues from the underlying current with a porous membrane

correct the punctuation.

CORRECTED:
The latter shield the tissues from the underlying current with a porous membrane.