The fermenter is sealed off from the air except for a long narrow vent pipe, which allows carbon dioxide to escape from the fermenter. Since there is a constant flow of CO2 through the pipe, outside air is prevented from entering the fermenter, which reduces the threat of contamination by stray yeasts.
Answer: Um
Explanation:
If you could put the lines 161-162 I could help you, because I need to see the adjectives that are used.
