Answered

Why does your body need oxygen?
a. to produce energy
b. to expel carbon dioxide
c. to supply the food with oxygen
d. to fill the lungs with oxygen

Sagot :

Ateeyeshaviz
It's letter B, to expel carbon dioxide.... carbon dioxide a waste of respiration, it's needed to released in our body , most important is to supply the oxygen to the cell to make their function..