Why do hurricanes fall apart either in the northern Atlantic or over land?

Hurricanes fall apart in the northern Atlantic primarily due to cooler sea surface temperatures and increased wind shear, which disrupt their organized structure. Over land, hurricanes lose their primary energy source, which is warm ocean water, leading to a rapid decline in strength. Additionally, land surfaces create friction that can weaken the storm's circulation. These factors combined result in the dissipation of the hurricane's intensity.