<span>The answer is the option C. Altitudinal zonation. Altitudinal zonation is a graph or drawing showing the natural features of ecosystems of mountains at different heights. Several factors affect the ecosystems. On of the most basic and most used is the temperature. The infamous scientist Alexander Von Humbold was first in using the relationship between temperature and the altitude in a mountain in relation with the vegetation. Other factors related with the altitude and the ecosystems are solar radiation, soil composition and humidity.</span>
There would not be any seasonal change.
The amount of heat they are exposed to has a lot to do with the inferences and observations that they make on the density of the earth's core. The inner core is the most compact due to the fact that they have a lot of direct exposure to heat and the gravity of the earth pressung down on it. The inner core is less subjected to those conditions.