One of the primary sources of indoor air pollution is A) ...

[jasdeep_brar]

One of the primary sources of indoor air pollution is
 
  A) greenhouse gases.
  B) carbon monoxide.
  C) acid deposition.
  D) environmental tobacco smoke.

Question 2

The main cause of acid deposition (acid rain) is
 
  A) burning fossil fuels.
  B) manufacturing byproducts released into the air.
  C) pesticide residues that enter the water supply.
  D) deforestation.

[krakiolit]

Answer to Question 1

D

Answer to Question 2

A

[jasdeep_brar]

Wow, this really help

[strudel15]

Thanks for the timely response, appreciate it