Git. Does every commit copy the entire repository?

Question

git

Am I correct in thinking that:

1. Does every commit copy a snapshot of the entire repository?
   
2. Therefore, with a large number of small commits (even one file at a time) with small changes, the size of the repository grows much faster than if I made one commit at once with all the files that have changed?
   

Answer 1

If the file does not change, then no duplicates are stored.