How come invasive species do not cause problems in their native ecosystems?

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 : )

when it gains or loses electrons

i don't know that i agree with that but what's the question ?

area of focus