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: ButisitnotthisveryurgetoisolateitselfthatissocharacteristicoftheJewishpeople,thatrepeatsitselfineveryothernationoftheworld?Isitnottheinfringementbyothernationsofanation'sbeliefinitsrighttobeindependentthatistheincessantcauseofriots,revolutionsandwar?

Answer: But is it not this very urge to isolate itself that is so characteristic of the Jewish people, that repeats itself in every other nation of the world? Is it not the infringement by other nations of a nation's belief in its right to be independent that is the incessant cause of riots, revolutions and war?

Add spaces: Whentheworkmeasures21-23(25-27-27)cm,dividetheworkintofrontandbackandknittherestseparately.

Answer:
When the work measures 21-23 (25-27-27) cm , divide the work into front and back and knit the rest separately.