Prior to the disaster, the climbers started to complain of fatigue, dizziness, lack of sleep, persistent headache, and impaired motor function. These are symptoms commonly associated with Acute Mountain Sickness (AMS). AMS is caused by not having enough oxygen. At high elevation, there is less oxygen available to the body because . Individuals who live at high altitudes (rather than just visiting them) suffer from AMS at the altitude in which they live. a. the overall atmospheric pressure is lower so the partial pressure of oxygen is also lower, would not
b. oxygen make up a smaller percentage of the air, would
c. oxygen makes up a smaller percentage of the air, would not
d. the overall atmospheric pressure is lower so the partial pressure of oxypen is also lower, would

a. the overall atmospheric pressure is lower so the partial pressure of oxygen is also lower, would not

Explanation:

As an individual rises higher on a mountain, he will experience a situation where the air becomes increasingly thin. This means that the oxygen density becomes reduced each time the altitude becomes higher, this reduction in air causes a lower atmosphere pressure, since the pressure of the oxygen gas is also low, which makes breathing difficult and can cause Acute Mountain Sickness' symptoms. However, people who already live in high attitudes, have their bodies adapted to this situation, which means that they do not suffer from these symptoms.

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).