Answer:
The evidence of your claim and the emotion or feelings it gives people.
Explanation:
You have to have factual info for people to believe what you are saying and the feeling matter too because it helps people understand what you mean. Look at one of Martin Luther King Jr. 's speeches! Hope this helps!!! ;)
After boots you should try put a period.
What’s going on in the text?
The electromagnetic wave is self propagating, what I mean by that is, an electric field generates a magnetic field at 90 degree phase angle, and the magnetic wave you get as a result generates the electric wave at the same phase angle. The interchange of electric to magnetic and vice versa continues and lets the electromagnetic waves to travel without any medium. Quite interesting, really!
It could be 2 answers. Either 'In fact" or "In other words"
Pick the one that sounds better to you