October 2018 1 397 Report
Dalam tanaman terkandung unsur-unsur makro dan mikro. setelah diadakan analisa abu, maka unsur-unsur yang ditemukan dalam jumlah sangat sedikit adalah...
a. Mg, Fe, Ca
b. S, P, K
c. Cu, Na, S
d. Mn, Co, Zn
e. C, H, O, N
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