1_DEGREE_CLARKE_=_1_PART_OF_CACO3_PER_______________PARTS_OF_WATER.?$

1.	1_DEGREE_CLARKE_=_1_PART_OF_CACO₃_PER_______________PARTS_OF_WATER.?$
A.	10,000
B.	30,000
C.	50,000
D.	70,000
Answer» E.

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