Answer:
C. One particular good or service
Explanation:
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.
The Ice Ages shaped and sculpted the face of the Earth. Continents that were once connected by land bridges had shifted and separated during the Ice Ages. Therefore without the Ice Ages, Earth would look significantly different, and some of the natural beauties like Niagra Falls would not exist.
Jordan river forms a natural boundary between Israel and Jordan and empties into the Dead Sea