Multiple Choice
The Fe and Mn cycles include
A) reduced and oxidized forms that are very chemically reactive.
B) large reservoirs of solid mineral forms that are chemically inert.
C) incorporation of Fe and Mn into the exoskeletons of diatoms and other alga.
D) toxic forms that can poison aquatic ecosystems if the cycles are imbalanced.
Correct Answer:

Verified
Correct Answer:
Verified
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