1. There are two types of loops in scratch. One is the repeat block which allows you to choose how many time a sprite does something. The other is the foreve block which allows a sprite to continuosly so something untill you tell it to stop.
2. You should use the repeat block becasue then you can change the number of times a sprite does something so you can change the number of times it repeats to get the sprite to do what you want it to.
3. No because once the sprite says Forever loop one time then it continues to say forever and ever over and over again but it never goes back to say Forever loop.
4. You can use the sensing blocks to tell the sprite when to start or stop doing an action. Yes there is more than one way to tell the sprites to do this.
5. Yes the code snippets are equivalent. Sense they changed the order of the blocks and added a NOT block it does the same action when the space bar and green flag are pressed.
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