tone
If you are talking about the feeling like you want to throw up, the term is nausea.
I want paper presentation for will computer lead an unemployment
yes i want a paper presentation topics in wireless communication
i need paper presentation in the topic of embedded system
None of them is particularly difficult; you may want to do a presentation on all three.
Feeling envious is the feeling kind of like jealousy, you envy someone, you want to be like them, or want to be them.
you want to better communicate the main point of the presentation.
networking
yes
You can press F5 to start the presentation from the beginning, or Shift+F5 to start the presentation from the slide you are currently on.
You may want to hand it out to your audience. You may want it for people who cannot see the actual presentation. You may want to use it as notes for yourself during the presentation. You may want a hardcopy so you can create it again if the original gets lost. For these and many other reasons, you would print a Powerpoint presentation.
A slide is a single screen of a presentation, and every presentation is composed of several slides. The slides contain the information you want to communicate with your audience.