Answer:
Step-by-step explanation:
In the provided text, the speaker is delivering a speech about the ozone layer and its potential depletion. Let's break down how the elements you mentioned are present in this speech:
1. **Capture favorable attention from the audience:** The speech begins with a vivid description of a future scenario in the year 2030. This is a technique to capture the audience's attention by drawing them into a hypothetical situation.
2. **Give the audience a reason to listen to the rest of your speech:** The speaker introduces the idea that the ozone layer is being destroyed, and this could have severe consequences in the near future. By raising this concern, the audience is given a compelling reason to listen further to understand the issue's significance.
3. **Introduce the topic:** The topic of the speech is introduced as "an environmental phenomenon known as the ozone layer." The speaker sets the stage for discussing the ozone layer and its potential environmental impact.
4. **Establish yourself as a credible source of information:** While the passage doesn't explicitly state the speaker's credentials, the tone and the structured approach to the topic give the impression that the speaker has done research and is knowledgeable about the subject. This helps establish credibility.
5. **Preview your main points (thesis):** The thesis, or the main points to be discussed, are hinted at in the questions posed by the speaker: "Is it only helpful or can it be harmful as well? When did we first become concerned about the depletion of the ozone layer? Is it a real problem or just media hype? Can the damage be corrected?" These questions serve as a preview of the main points that the speech will address.
Overall, the introduction effectively engages the audience's attention, gives them a reason to listen, introduces the topic, and hints at the main points that will be explored in the speech.