I notice that as I add content to any of the other pages (apart from Home page), these contents all seem to replicate themselves in the Home page. But all pages have been set as Main Page (no parent).

The breadcrumbs at these pages (apart from Home page) all show this trend:

home / contact
home / products
etc.

Seems like all pages are embedded within Home page. How do we disassociate the pages from the Home page?