If humanity follows a "business as usual" trajectory, with no significant attempts to slow emissions, and then suddenly stops emissions in 2100, we will have emitted about 2100 Pg of carbon since the beginning of the industrial revolution.

Over long times, we can consider this as a single "pulse." How much of a 2100 PgC pulse would remain after 2000 years? Make your best guess.

%

How much will remain 10000 years later? Again, make your best guess. %