I think the answer is B, but I might be wrong
It will be 11:30 AM in bangkok, or so the time zone says..... lol
Answer:
CO₂ is the product of cellular respiration.
Explanation:
The overall reaction of cellular respiration is:
C6H12O6 + 6O2 + 36ADP + 36Pi → 6CO2 + 6H2O + 36ATP
Either adenine and guanine or thymine and cytosine. It is either because the first adenine pairs with thymine and guanine pairs with cytosine, So each rung will have one of the two pairs.