Owing to its northerly position a large part of Ungava is treeless, and belongs to the barren grounds where caribou roam and feed on the socalled caribou moss, a greyish lichen. The caribou, moose, antelope, mountain sheep, beaver, otter and mink are scarce.
Espionage normally is not reconnaissance, because reconnaissance is a military force's operating ahead of its main forces; spies are non-combatants operating behind enemy lines. Often called  recce  (British and Canadian English) or  recon  (American and Australian English), the associated verb is reconnoitre.
Nuclear Force is defined as the force exerted between numbers of nucleons. This force is attractive in nature which binds protons and neutrons in the nucleus together. Since the protons are of same positive charge they exert a repulsive force among them.lectromagnetic force, gravitational force and strong nuclear force are the other forces. Weak Nuclear Force is caused by the emission or exchange of W and Z bosons. Weak nuclear forces are very short range because of the heaviness of the W and Z particles.