Determination of fluid category 2. Water in fluid category 1 whose aesthetic quality is impaired owing to: 1  a change in its temperature; or. 2  the presence of substances or organisms causing a change in its taste, odour or appearance, including water in a hot water distribution system.
Credibility is defined as the quality or power of inspiring belief. Credible sources, therefore, must be reliable sources that provide information that one can believe to be true. It is important to use credible sources in an academic research paper because your audience will expect you to have backed up your assertions with credible evidence.
There are three different types of credibility. Initial credibility comes from a speaker's reputation and occurs even before the speech starts. A well-known speaker or a noted expert in a field will bring more initial credibility to a speech than someone who is unknown to the audience. Derived credibility is created by the content and delivery of the speech. Ideas that are organized and well supported with convincing evidence will enhance derived credibility as will a delivery that is practiced and engaging. Enduring credibility is the impression a speaker leaves with the audience.