Which of the descriptions below does not explain the effects of air pollution on the respiratory system?
a. it could restrict air flow through the bronchi. b. it could disrupt the rate of ventilation. c. it could prevent hemoglobin from binding to oxygen. d. it could increase carbon dioxide uptake in alveolar sacs

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

16

explanation:

the marks go by 4s