1. Can yogurt-making bacteria be prevented from making yogurt? What evidence do you have to support your answer.
2. If you only added yogurt to the milk and found that it made yogurt (you didn't have all the other tubes), what would that show and what would that fail to show?
2. If you only added yogurt to the milk and found that it made yogurt (you didn't have all the other tubes), what would that show and what would that fail to show?
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