The reformer in a fuel cell system
A. stores energy much like a battery.
B. provides oxygen for the energy-releasing chemical reactions.
C. extracts hydrogen atoms from a variety of chemical substrates.
Answer: C
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Where are abyssal plains most common?
A) Atlantic Ocean B) Pacific Ocean C) Indian Ocean D) None of these choices
The highest temperatures on Earth are associated with the intense heating in subtropical deserts
Indicate whether the statement is true or false
The large left step in the San Andreas Fault in the Los Angeles area causes compressive ruptures along east-west-oriented ________ faults as in the 1971 San Fernando and 1994 Northridge events.
A. normal B. strike-slip C. transform D. thrust
The earth's major layers formed because ________
A) the chemical composition of the solar nebula changed over time B) the earth was heated after its formation resulting in melting and redistribution of major chemical compositions C) the earth's mantle grew like a crystal forming around the earth's core but the crust was exposed to space and stayed more like the original material D) radioactive decay caused materials to change over time and resulted in the layering