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STD 12 - 6. evolution — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 6. evolution1 Mark
MCQ
The primitive environment was reducing because in it
  • A
    $C{O_2}$was more
  • ✓
    ${H_2}$ was more
  • C
    ${O_2}$ was more
  • D
    $N{H_3}$was more
✓

Answer

Correct option: B.
${H_2}$ was more
b
It's Obvious

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