Natural ecosystems are able to maintain a vibrant diversity of life because they incorporate intricate recycling systems that conserve essential materials.
the arctic ocean does not touch Russia
Answer:
regional network
Explanation:
The market is a set of buyers and sellers who agree on the prices at which they will exchange goods and services.
In the economies of the third-world, products are usually put to the periodic market. Periodic markets are the biggest element of the marketing system.
The basic elements of the market are price, demand, supply, income.
