.7z is the archive format, and .001 identifies this as the first volume.
From Winnie-the-Pooh to Paddington, exploring how teddy bears became a staple of children's literature and film. teddybears.7z.001
The role of "transitional objects" in child development and the lifelong emotional attachment many adults maintain with stuffed animals. .7z is the archive format
When you open the .001 file with a tool like 7-Zip or WinRAR, the software automatically joins the parts together to reveal the original folder or document inside. Potential Essay Themes teddybears.7z.001