The fat soluble vitamins are
A) A, B, C, K.
B) A, C, D, K.
C) A, D, E, K.
D) B, C, D, E.
Question 2
One of the advantages of hydrogen fuel cells as an energy source for space travel is that
A) hydrogen is easily generated in space.
B) the water produced by the cell can be used for other purposes.
C) fuel cells are not limited by second law problems.
D) fuel cells produce more energy in the vacuum of space.