What chemical is the principle source of energy at many of Earth's hydrothermal vent systems?
W)Oxygen
X)Carbon dioxide
Y)Hydrogen Sulfide
Z)Iron Oxide
Answer: Y
What chemical is the principle source of energy at many of Earth's hydrothermal vent systems?
W)Oxygen
X)Carbon dioxide
Y)Hydrogen Sulfide
Z)Iron Oxide
Answer: Y