Because he had a power like no other.
Scientist used abstract reasoning to explain something happened
C
because civilization has to do with a very organized Society
<span>A depressant must reduce mental activity and decrease physical activity. A depressant acts by interfering with and reducing the levels of activity in neuro-transmitters. This serves to slow down the chemical processes within the brain which consequently lowers the level of mental activity or arousal. The brain also programs the body to reduce the levels of physical activity in a proportionate manner.</span>
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.
