chemistry = physics + biology regions where nutrients are found in surface waters are also areas...
DESCRIPTION
CO 2 C org Phytopl. Zoopl. Bacteria Respiration (Heterotrophic) Photosynthesis “Net Primary Production (NPP)” RhRh NPP Export Production Categorizing Plankton: 1) Trophic Status Some of the organic matter produced by autotrophs gets consumed by heterotrophs before it is removed from surface waters by sinking (or circulation).