wetting reduces the strength of all paper up to 95 except wet strength paper such caffe filter paper,which arespecifically mode to retain strength even when wet.

The standard wet dry vaccum will actually retain its suction for a long time. They are also easy to clean out. They only require to be taken apart, and dumped out.

It is when slopes are being terraced(flat lands) to be able to build bunds to retain water for wet rice cultivation.

it would grow faster in wet cotton than in wet soil soil , as cotton would retain adequate water for a longer period of time than soil .

The "fluffy" side of velcro will retain some water and also the taped backing on which the "hooks" are mounted will also. Ive yet to discover if velcro still works when its wet though. (probably does, because wet suits have velcro)