Chemical reactions involving ________ have been proposed as energy-yielding reactions for primitive organisms.
A) Fe, O₂, and H₂
B) S, O₂, and H₂
C) S, and O₂
D) S, and H₂

Question

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The Answer of Chemical reactions involving ________ have been proposed as energy-yielding reactions for primitive organisms.
A) Fe, O₂, and H₂
B) S, O₂, and H₂
C) S, and O₂
D) S, and H₂

Chemical Reactions Involving ________ Have Been Proposed as Energy-Yielding Reactions