¿Para que se usan las viñetas?

¿Porque es importante que las indicaciones sigan un orden

Okay so i'm taking an online spanish course (penn foster), and in the study guide, you have to create a bunch of sentences with words you've learned so far. translating, reading, and those kinds of things are fairly easy, but when it comes to making my own sentences, my brain just kinda waltz's away. anyone got any tips?

5. a juana (gustar) ver telenovelas.

As an airplane moves forward,the shape of its wings causes a difference in pressure below and above the wings. what’s is the effect of the difference in pressure