This toxic chemical binds very easily to red blood cells A) ...

[leo leo]

This toxic chemical binds very easily to red blood cells
 A) sulfur dioxide.
  B) sulfur trioxide.
  C) lead.
  D) ozone.
  E) carbon monoxide.

Question 2

Photosynthesis
 A) removes carbon dioxide from the air.
  B) lowers atmospheric oxygen concentrations.
  C) will not be affected if global warming accelerates.
  D) only occurs on land.
  E) none of the above

[bigcheese9]

Answer to Question 1

E

Answer to Question 2

A

[leo leo]

Gracias!

[31809pancho]

Thanks for the timely response, appreciate it