Forests are the only carbon sinks on earth.

Hello, to answer your question properly.

 If it's a T or F it would be False
  living things like you and us animals, all plants, ect.
   Breath carbon out of their body because when we use the oxygen 
     basically the nutrients are taken out from the oxygen and made into
       carbon.

                          Signed by, Frequent Answerer Sargedog

C. gemstones they are the only non metallic mineral from the list.