Compared with a solid steel bar having a rectangular ...

[a0266361136]

Compared with a solid steel bar having a rectangular cross-section, an I-beam has the advantage of
 
  A) being lighter.
  B) being stronger per bodyweight.
  C) both of these
  D) neither of these

Question 2

There are about as many atoms of air in our lungs at any moment as there are breaths of air in the atmosphere of
 
  A) a large auditorium.
  B) a large city.
  C) the United States.
  D) the whole world.
  E) none of the above

[vboyd24]

Answer to Question 1

Props to you, cheers.

Answer to Question 2

Answer: D

[a0266361136]

Both answers were spot on, thank you once again

[vboyd24]

Great! Please up vote