Which statement accurately describes hydrogen?
A. Hydrogen is fairly rare in the universe.
B. Hydrogen is abundant in the atmosphere as a free gas.
C. Hydrogen has a high net energy yield.
D. Hydrogen gas is a fuel produced by using other forms of energy.
E. Hydrogen use in fuel cells emits mercury pollution.
Answer: D
You might also like to view...
Which transformation method is most commonly used in GIS?
A. Affine transformation B. projective transformation C. Equiarea transformation D. Similarity transformation
Deposition of sediment from turbidity currents occurs on/in the:
a. continental shelves b. abyssal plains c. submarine canyons d. sea mounts
Which of the following is NOT one of the four largest cities, with respect to population, of the Middle East?
a. Cairo, Egypt b. Istanbul, Turkey c. Tehran, Iran d. Baghdad, Iraq e. Kuwait City, Kuwait
How can plate tectonics help explain the existence of fossil marine organisms in rocks found on top of compressional mountains?
What will be an ideal response?