Because since developing countries are still growing, when they finally get to the level of some more advanced countries the country as a whole feels a "greater growth"
I think the answer is "the older it is"
Reason: I might be wrong but is something (like a shell) gets buried in something (like sand), overtime many things (like dirt, soil, sand, etc.) will be on top of the original. This will make layers. So, the older rock is on the bottom since it has been there for the longest and it gets covered by other stuff (causing the layers).
Hope this helps! :) (If I'm wrong, sorry :( )
Answer:
Structure in a chromosome that holds together the two chromatids
Explanation:
ANSWER IS C HOPE IT HELPS :D
