Vector Images

I'm  new to the vector world. After much reading and research, I'm still not certain I'm doing it right. The vector is in SVG format. I attached the file to this post. Please help..... Below is information that explains the problem......Thanks

When I enlarge the svg image, it has these white thin lines which makes the image very unattractive. This doesn't seem right, yet I don't have a clue if those white lines are supposed to be there or not (see attached image)

So my questions are

(1) is the attached image appropriate for uploading to adobe?

2) what are those white thin squiggly lines?

(3) if those white squiggle lines are not supposed to be there, how do I get rid of them?

(4) any feedback for how to convert a transparent PNG image to vector (SVG) would be appreciated.

all you need to do to see what I see is to click on the attached image to show a preview. You'll see the white thin lines I was talking about.