You're first "dragonfly" from 0:10 to 0:30 is not a dragonfly. It's a hover fly from the order Diptera, family Syrphidae. Notice it has only 2 wings, characteristic of true flies, not 4 winged dragonflies. Still a nice little intro video to amazing creatures.
I'm very confused. In one fact, the video said dragonflies can regulate their temperature; in another fact, it said they are cold-blooded and depend on their environment in regards to temperature. How can both be true? :)
Points Nr. 9 and Nr. 10 contradict each other, at least in the way you displayed them. So they can regulate their body temperature using not just the environment but also internal processes. While also being cold-blooded, meaning they are reliant on the environment to keep their body within reasonable temperature ranges and possess next to no, if any at all, methods to maintain their body heat and keeping themselves from freezing to death. In point 9 you describe essentially them being warm-blooded. capable of regulating their body temperature. while in point 10 you said that they are cold-blooded. they struggle greatly with maintaining their body temperature. So which is it? Did you intend to say they struggle with keeping their temperature low? because that tends to be an issue warm-blooded creatures struggle much more with than cold-blooded ones.
One was fascinated today by a large electric fan. It kept flying into the breeze and darting from side to side. I was afraid curiosity would cause it to try the other side. Eventually it did and was sucked into the fan blades and killed. But it had fun for a while. I was sitting in the breeze cooling off.
Hey why don't you Repeat Everything TWICE to make your video Longer! Make an otherwise interesting video UNWatchable because you want to REPEAT things Over & Over & Over & Over &... You get the idea? Probably Not but Oh Well You Lost me as a repeat viewer!