In the carbon cycle, seaweeds and plants play a fundamental role by

A、Increasingtheamountofdissolvedcarbondioxideasaresultofdecomposition.;
B、Decreasingtheamountofdissolvedcarbondioxideasaresultofrespiration.;
C、Decreasingtheamountofdetritus.;
D、Decreasingtheamountofcarbondioxideasaresultofphotosynthesis.