Nadia submits her article to a scientific journal for publication. who makes the final decision on whether her article is published in that scientific journal?

The editor is responsible for sending the articles for later publication in order to verify their content and make the final decision. These people are filters that handle the writings before their publication acting as vigilant, cleaning and organizing the content of each article.

What are the options?

Yes you are cute answer theories to explain the colonization of the new world the last great habitable landmass to be occupied by humans focus on the bering land bridge, or beringia, which emerge by siberia and alaska the last ice age.