Add spaces: Ifthethreadistoolongandnotstiffenough,youcansprayalittlehairsprayonit!

Answer: If the thread is too long and not stiff enough, you can spray a little hairspray on it !

Add spaces: Soitiswithmostoftheinhabitantsoffreshwater,formanyofthegenerainthemostdistinctclassesrangeovertheworld,andmanyofthespecieshaveenormousranges.

Answer: So it is with most of the inhabitants of fresh water, for many of the genera in the most distinct classes range over the world, and many of the species have enormous ranges.

Add spaces: Death:September7,1982inSkrbk,Denmark

Answer:
Death: September 7, 1982 in Skrbk, Denmark