The more people that are migrating to urban areas (urbanization) needs more crops for the citizens which causes more people to grow crops and without crop rotating or methods to prevent soil degradation. More likely answer is that more industry grows in the urbanized areas and they have poor management of the soil which causes soil degradation<span />
Answer:
The Artic Ocean is 5.427 Million Square Miles
The Pacific Ocean is 63.8 Million Square Miles
Explanation:
Artic: 5,427,000 Square Miles
Pacific: 63,800,000 Square Miles