Difference between olcanic island and coralisland

The volcanic islands of Oceania are the peaks of dormant or active underwater volcanoes. Among them there are islands of the area from ten square kilometers to several thousand and they are the main type of islands of Oceania.  

The most famous of the volcanic islands are the Hawaiian Islands, Easter Island, Tahiti and Samoa. Coral Islands of Oceania (Biogenic) in the oceanic shallow water usually settled entire colonies of small marine animals-corals. For centuries, with the death of corals, their skeletons are the bottom of the ocean, pressed and form a mountain breed. Over time, coral reefs and whole islands appear above the surface of the water, and if the coral deposits occurred on the contour of the vent of the underwater volcano, there are atolls-coral islands with a lagoon in the center.  

The Coral Islands (atolls) in Oceania are hundreds, both single and forming whole archipelalloes. These are the Carolinskie, Mariana, Marshall Islands and Gilbert and Tuammotu islands. The largest atoll of Oceania is Quadjalane. Its area is 2.3 thousand square kilometers (including the lagoon area) and belongs to the archipelago of the Marshall Islands.

marginal cost is a microeconomic measure that us to evaluate the extent to which the level of production of a good is sustainable in accounting, that is, to how many quantities the company plans to profit from the production of the good.

the concept of marginal cost is simple, it means the cost of producing one more item. for example, in the case of pies, the marginal cost is the cost of producing one more pie than those that have already been produced.

it is important to understand that productive activity influences marginal cost. the marginal cost of some goods can be very high, while others may be insignificant. for example, the marginal cost of producing an extra plane is very high. already the marginal cost of a water company to provide 1l more water is derisory.

in the case of pies, the cost involves the inputs, the labor and the fixed cost, which involves the fixed space of the bakery. the level of production initially has the marginal cost decreasing because there is space and manpower available. however, to produce more you have to hire more workers and buy more inputs. if physical space is limited, workers will conflict with places, inputs and their productivity will decrease, meaning there is an optimum point of production for each level of space and manpower. from this point on, the productivity of the workers will be getting smaller because of lack of space, so that the marginal cost of producing one more pie will be increasing. so, although you have not posted the chart, but if you have the answer, you can see that my explanation goes according to the marginal cost curve that will increase from the 4th pie, answer (c).

answer; foreign services officers;