I chose an peer-reviewed academic paper.
Embracing eDNA and machine learning for taxonomy-free microorganisms biomonitoring to assess the river ecological status
https://doi.org/10.1016/j.ecolind.2023.110948
This is a Primary Source because it is a research study that is original and unique. It has data and methodology and provides new knowledge in the field of ecological water assessment.
This article is from a credible publication source that publishes academic peer-reviewed articles. The article is structured as a peer-reviewed academic with an introduction, methods, results, discussion and extensive references.