Weathered rock /sediments
The Arctic Ocean is the closest to 90 north latitude and the Southern Ocean is closest to the 90 south latitude. ( hope this helps) :]
Explanation:
<h3>Due to the migration to the cities, the number of people living in urban areas has increased; in contrast, the number of people living in rular area has declined. In 1950, 43% of Mexico's population lived in urban areas and by 2010, this figure (proportion) rose to nearly 78%. Only 22% of families still live in rular areas. </h3>