The answer would be A. distribution of mineral deposits.
This is because the amount of minerals found in a particular region can affect the economy because of the possible exporting of that material.
The variable is y and y=2.
Mining
The Pacific islands have a great amount of minerals
The atmosphere and Earth's interior are layered by density. Gravity pulls more strongly on denser materials so denser materials are at the center of things. Earth's core, at its center, is denser than its crust.
<span>Ice age following is an example of a long-term climatic change. Because ice age happens every 300-400 million years when the earth tries to revive back its natural state form. Blizzard happens during a snowstorm and also lasts in days to months. Summer and winter are types of seasons occurring for a few months.</span>