Why do scientists use models of natural systems? a) scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly b) scientists use models of natural systems because they like to use art in science c) scientists use models of natural systems because the models are more accurate than the actual system d) scientists use models of natural systems because models work exactly the way these systems do in nature elimi

A) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly

Explanation:

Natural systems are those that were not created by humans (non-artificial ones), ie of non-human origin (natural). They are natural systems: The solar system, Biosphere, Ecosystem. Set of elements that interact with each other, making exchanges and influencing each other. These systems are huge, or too smal, with many different components, complex and difficult to evaluate, so when scientists want to study this type of system, it is necessary to make models that represent the system as faithfully as possible.

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).