There are a few ways to backup your blogger blog. The first way is to make a copy of your entire blog using a web based backup tool. The second way is to make a copy of each post and each page using a web based backup tool. The third way is to make a copy of your blog using the Export function in your blogger blog. The fourth way is to make a copy of your blog using the Export function in Blogger itself.
The fifth way is to use an online backup service such as DropBox, Google Drive, or iCloud. The sixth way is to use a local backup service such as Windows Live OneDrive or DropBox. The seventh way is to use an online archive service such as WebCite or Internet Archive. The eighth way is to use an online archiving service such as Google Drive or Microsoft OneDrive.
The conclusion of this article is that there are many ways to backup your blogger blog, but the best way depends on what you want to do with the backup.