From an electromagnetic wave the electric and magnetic field is what direction toward each other?

h

Explanation:

carla slowed down in the beginning of her trip, stopped, and then sped up

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )