Specialization, along with the complementary concept of the division of labor, occurs when the innate inequalities of human productive output are intensified along different skills. An individual becomes economically specialized when he focuses his productive efforts on an increasingly narrow range of tasks.
A suburb is a residential district located on the outskirts of a city. If you live in the suburbs, you probably travel to the city for work. Suburb comes from Latin: sub means "below or near" and urbis means "city." You also will recognize this root in urban.
Longshore current move parallel to the shore as longshore drift under the prevailing wind in zig-zag motion.
It is an ocean current that is cause by swell sweeping into the shoreline at an angle and pushing water down the length of beach in a uniform direction.
It is a geological also process that consist of the transportation of sediments such as silt,clay,sand and shingle.
I'm pretty sure it's railroads, because there's not that many highways in Siberia, the rivers would be frozen over, and there's not a ton of people in Siberia. I'm sorry if I'm wrong.