Which of the following is true regarding fuel cell technology?

A. They are only about 40-45% efficient.
B. They must receive a constant supply of water and oxygen.
C. They must be recharged with an electrical current.
D. They were first designed by NASA.
E. A fuel cell stack providing all of the electricity for a typical home is not feasible because it would be too large.


Answer: A

Environmental & Atmospheric Sciences

You might also like to view...

Which occurs when the innovation is carried to new areas by migrating individuals?

A. expansion diffusion B. relocation diffusion C. hierarchical diffusion D. contagious diffusion

Environmental & Atmospheric Sciences

The world leader in land area devoted to organic farming is

A) Australia. B) the United States. C) Canada. D) France. E) Japan.

Environmental & Atmospheric Sciences

Where on this cross section would water at the surface become groundwater?

A. 4 only B. 2 only C. 2 and 4 D. 1, 2, and 3 E. 1 and 3

Environmental & Atmospheric Sciences

Pastoral nomads and many animals migrate to mitigate the effects of drought, a coping adaptation known as drought avoidance

a. True b. False Indicate whether the statement is true or false

Environmental & Atmospheric Sciences