a batholith differs from an individual pluton because a batholith is

a.
much smaller

b.
exposed to the surface

c.
made of a different type of rock

d.
much larger

There is no map could you put up a picture of the map and i will try to .

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.