Answer:
A preview of main ideas.
Explanation:
A preview can be defined as a view to show in advance what is to be shown in the presentation. It is a statement that is said directly to the audience about the main points of the speech.
<u>In the given case, the speaker is previewing his main ideas of the speech by stating the points that he is going to speak. He gave a brief description of his speech that his speech is going to be based on the reasons for recycling, cost-saving benefits, etc</u>.
So, the correct answer is a preview.
The answer is true ofcourse
Answer:
Both move slower through densely packed molecules
Explanation:
A transverse wave is one in which the particles of the medium is said to move in a direction that is perpendicular to the direction that the wave moves through. A longitudinal wave is a type of wave whereby the particles of the medium are said to move in a particular direction that is parallel to the direction the wave moves through.
Both waves can travel through a solid medium while only longitudinal waves can only move through liquid medium.
