I think they can, because depending on how much the person has to offer it can provide tough facts for political viewpoints.
The definition states that human rights have to be protected by the law. In my opinion every human being should have human rights.
Answer:
The rising and falling of the tides would cause water levels around Jamestown to rise and cause fresh water streams to become brackish.
Explanation:
The rising and falling of the tides is likely to make the fresh water salty. This is because ocean water is salty and the rising and falling of tides will cause the fresh water to mix in the ocean water. in the given case, the event is likely to occur twice daily so it will increase the chances of fresh water streams turning salty.
If it's only regarding the invention of a specific dental equipment, it'll be to inform. the student is preparing to share their knowledge on the dental drill.
to persuade is usually the purpose when there's a question or an argument being raised, and in this case, it doesn't sound like anyone would be against dental drills. dental drills is also a fairly dry topic, so it's doubtful that the student would be aiming to entertain. it isn't a demonstration because the student likely isn't giving a step by step how to in regards to using a dental drill.