Add spaces: Aroundusthefieldsareploughed,andthewinterseedissowed

Answer: Around us the fields are ploughed, and the winter seed is sowed

Add spaces: Tutoredathomebyprivateteachersuntilhewas16yearsold,Christiaanlearnedgeometry,howtomakemechanicalmodelsandsocialskillssuchasplayingthelute.

Answer: Tutored at home by private teachers until he was 16 years old, Christiaan learned geometry, how to make mechanical models and social skills such as playing the lute.

Add spaces: Inthecomingdecades,thepopulationinthearcticregionisprojectedtoincreasesignificantlyduetotheexpansionofexplorationforresources.

Answer:
In the coming decades, the population in the arctic region is projected to increase significantly due to the expansion of exploration for resources.