Ventilation helps to remove ____________________ gases and odors ...

[Awilson837]

Ventilation helps to remove ___________________ _ gases and odors that come from manure.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

The trend in hog housing is more ___________________ _ housing.
 
  Fill in the blank(s) with the appropriate word(s).

[kusterl]

Answer to Question 1

toxic

Answer to Question 2

confinement

[Awilson837]

Thanks for the timely response, appreciate it

[bimper21]

Gracias!