Because they have not been distrubed
Bacteria is good, but there is some bad. in this case, your talking about your digestive track therefore, this is good bacteria and what bacteria does is it breaks down the stuff that your body cannot break down by itself so the answer is C I hope this helped and I hope it was the branist answer
Explanation: If the rate of photosynthesis increases, then the number of bubbles will increase.
A. because the more you do it the more chance you have of being correct
