I assume you are referring to structures that are left over and serve no apparent purpose. These are called vestigial structures.
Phylogeny.
If I remove the battery of my nokia c3-01 will I lose my call history.
Scientists may refer to similar structures as homologous structures, which are anatomical features that have a common evolutionary origin, despite potentially serving different functions in different species. These structures can provide evidence of a shared ancestry between different organisms.
You would have to call your previous employers to receive that. I do not think that anyone has a complete list of everyone's work employment history.
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Evolutionary Anthropologist
How to recall a previous incoming call
vestigial organs like the appendix which is vestigial in man
niece.
click menu and then call settings and ur call history is right there
They call it 'Pre-history'.
People who work in archaeological digs are called archaeologists. They study human history through the excavation and analysis of artifacts and structures.