Some products on the market today involving nanotechnology include
A) cars.
B) elevators.
C) sunscreen.
D) cosmetics.
E) all of the above
E
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The energy source with the highest net energy ratio for space heating is
a. Oil b. active solar c. passive solar d. electric resistance heating e. Wind
A population that is at equilibrium
A) is experiencing a slow rate of growth. B) is staying at about the same size. C) is slowly declining because of increases in environmental resistance. D) has most likely just lost a key predator.
Use your knowledge of plate boundaries to answer whether a volcano is likely or unlikely to form at the location of the red triangle.
A. likely B. unlikely
Which of the following reactions involves the addition of different groups to the two ends of a double bond?
A) bromination B) hydrogenation C) both a and b D) neither a nor b