That really depends on several different variables including the square footage of the roof itself and the size / type of the tiles being used.Most of the time when buying roofing tiles / shingles it...
yes they are all nailed, they come either pre drilled or you use a tile hammer which has a "pick like end to make an indent for your nailing position, the next shingle is then placed over the nail to...
Depends on the type. Eastern dragons have the head of a camel, claws of an eagle, body of a serpent and scales of a carp. Most dragons though look like giant lizards with bat-like wings.
A Dragons phenotype is determined by its genes, just like every other animal and plant and fungus and slime-mold and bacteria and Archea. If you're asking about shape shifting then you will have to...