The annual output of coccolith in the oceans is 536 800×10\+\{8\}~5 368 000×10\+\{8\}tons, which can provide 531 432×10\+\{8\}~5 314 320×10\+\{8\}tons of food for planktons, produce 12.8×10\+\{8\}tons of carbonate, fix 2 000×10\+\{8\}tons of carbon, absorb 7 333×10\+\{8\}tons of CO\-\{2\}from the atmosphere and hydrosphere (equals 32 times the total CO\-\{2\}emitted in the world in a year), emite 6 943×10\+\{8\}tons of O\-\{2\}by photosynthesis. It showed great significance in maintaining ecological balance...