QUES: His name to know many people on our planet even if they understand music not much

correct the punctuation.

CORRECTED: His name to know many people on our planet, even if they understand music not much.

QUES: A price level of less than DKK 100 per tonne CO2 means that the flexible mechanisms will lead to greater reductions in CO2 per DKK than most domestic mechanisms

correct the punctuation.

CORRECTED: A price level of less than DKK 100 per tonne CO2 means that the flexible mechanisms will lead to greater reductions in CO2 per DKK than most domestic mechanisms.

QUES: I shop online in malls in the cities I travel to and in Greenland primarily at Ittu Sports

correct the punctuation.

CORRECTED:
I shop online, in malls in the cities I travel to, and in Greenland primarily at Ittu Sports.