13. The cells of our body normally do not carry out fermentation, yet we give off carbon dioxide when we exhale. Explain.

both aerobic respiration and fermentation produces carbon dioxide as a product but however fermentation occurs without oxygen and this was seen in the experiment.

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles