Which gas can replace oxygen in blood hemoglobin, thereby ...

[tnt_battle]

Which gas can replace oxygen in blood hemoglobin, thereby reducing the transport of oxygen to the brain?
 A) sulfur dioxide (SO2 )
  B) carbon monoxide (CO)
  C) carbon dioxide (CO2 )
  D) methane (CH4 )

Question 2

Extratropical cyclones are found ____.
 A) inside the tropics
  B) outside the tropics
  C) at the equator
  D) both inside and outside the tropics

[fwbard]

Answer to Question 1

B

Answer to Question 2

B

[tnt_battle]

Great answer, keep it coming

[jomama]

Gracias!