A: Laws of nature and physics apply, to Asgard, Vanaheim ect. as they do in real life. Along with these laws is the Futhark. The futhark can alter the laws sometimes breaking them entirely. Creatures can be imbued with certain aspects of the futhark by placing Runes on them (through branding) this is true for about anything. Drakes are essential to the Futhark, and learning how to use it takes decades. More later...
"Dulce bellum inexpertis."
Official Forum Expert on Norse Mythology
As Odin says in the Hovamal:
"Praise no day 'til evening; no wife 'til on her pyre; no sword 'til tested;
no maid 'til bedded; no ice 'til crossed;
no ale 'til drunk."