The correct answer would be A.
Accumulation of carbon dioxide is responsible for the increase in dough size
Because of all the air pollution i THINK IS THE ANSWER
Answer:
Smaller single-celled organisms have a high surface area to volume ratio, which allows them to rely on oxygen and material diffusing into the cell (and wastes diffusing out) in order to survive. The higher the surface area to volume ratio they have, the more effective this process can be.
Explanation: