Its very common topic and a number of posts already made by other authors in this community and steemit. Whatever, thanks for your psot but still try to improve post quality. For such kind of informative posts try to mention source from where you get idea or motivated to write this article. Thanks again.
All the information on the publication are based on what I have learnt so far. I didn't get the idea from any external source which is why the quality is seen as low.
I will work more on my post quality.
Thanks a lot brother.