Add punctuation: The addition of a greenhouse gas which absorbs in both bands would then increase the absorption in the unsaturated band but not in the saturated band
A: The addition of a greenhouse gas which absorbs in both bands would then increase the absorption in the unsaturated band but not in the saturated band.

Add punctuation: sonydcamsys missing not found error Unavoidably PC may get infected by virus like VirusW97MBablasK or controlled by malware like CompuClever After they are removed by antivirus such as Symantec Endpoint Protection the infected file sonydcamsys would be deleted as well so that missing problem is found
A: sonydcam.sys missing / not found error: Unavoidably PC may get infected by virus like Virus:W97M/Bablas.K or controlled by malware like CompuClever. After they are removed by antivirus such as Symantec Endpoint Protection, the infected file sonydcam.sys would be deleted as well so that missing problem is found.

Add punctuation: In a 1997 article Haga et al presented results from tests with various velocities in the main pipe in various LD measurements 1
A:
In a 1997 article, Haga et al. presented results from tests with various velocities in the main pipe in various L/D measurements (1).