Hi @carlos-ignacio. I think there are some issues with your current article:

• You need to ensure that the images you were using are permitted by copyright law. I've visited all of the websites which you've marked as your sources but I couldn't understand the language which is are being used on those sites. Read the terms and agreement of the site because using copyrighted material without permission from the original author is one of the reasons why you wouldn't get any support from @steemstem. Please refer here if you're not familiar with I was talking about.

• Your article is too short and some of the terminologies being used are not self-explanatory. It requires definition for people who are currently not in the field to understand. Please consider writing a little bit more to make it more interesting.

• I know your article is actually a paraphrased, translated version of its original article. Add some more information to make it great. Just imagine, every reader is not familiar with your topic. That will be a good start.

Please note that I'm not in any way, try to disapprove your work. If you have any problem regarding STEM-related articles, you can join steemSTEM Discord Channel and we will be glad to assist you.