Now replay the animation but focus on the orange arrows. What occurs every time an orange arrow is released

Edit the post so i can see the letters for each answer, and increase the points required so i'd be able to answer it.

The purpose of a lab is to do your "expirements" the importance of the topic is so you can now what the story is about and the last one is because no one is me with my question ( what is 3 over 4 x - 9 = 27 maybe you can )