QUESTION 21 Which of the following is a statement of the first law of thermodynamics?…
1. A student argues that it makes no sense to be concerned about coliforms in drinking water because they are harmless members of our normal microbiota. Explain why regulatory agencies are concerned about coliforms. 2. A friend who has lakefront property and cherishes her lush green lawn complains of the green foul-smelling scum on the lake each summer. Explain how her lawn might be contributing […]