Most countries use railroads to transport goods across long distances. which would be an advantage for using railroads to
transport goods?
a) they are cheap to construct.
b) routes and stops can be easily adjusted.
c)they cause little damage to the environment.
d) growth in trade since railroads can carry more goods,

the correct answer is ) possibility.

demonstrating opportunity cost is done through production possibility.

the opportunity cost can be demonstrated using the production possibility frontier or curve. this graphic shows the total number of possibilities for two products when we have the resources needed and used in an efficient manner. the main resources could be money, labor, and technology. the curve shows that the production of one good increases when the production of the othe

permafrost layer, it exists beneath a layer of soil, rock or sediment.

answer; conditional stimulus will trigger a conditioned response;