Lab report on yeast response. To pollution.1. Which test tubes showed decreased respiration by the yeast? How could you tell?2. What do the saltwater...

Lab report on yeast response. To pollution.1. Which test tubes showed decreased respiration by the yeast? How could you tell?2. What do the saltwater and liquid soap represent?3. Explain the role of small organisms, such as yeast, in our environment. How could pollutants influence this?