The importance of ENM/NP behavior (green) in nano-ecotoxicity studies (yellow) in the last 20 years (2010–2020). Data obtained from Scopus, search queries: ((TITLE-ABS-KEY(nanoparticles OR nanomaterials AND behavior) AND DOCTYPE(ar) AND PUBYEAR > 1999 AND PUBYEAR < 2021) AND (LIMIT-TO (SUBJAREA,”ENVI”) OR LIMIT-TO (SUBJAREA,”AGRI”)))((TITLE-ABS-KEY(nanoparticles OR nanomaterials AND characterization) AND DOCTYPE(ar) AND PUBYEAR > 1999 AND PUBYEAR < 2021) AND (LIMIT-TO (SUBJAREA,”ENVI”) OR LIMIT-TO (SUBJAREA,”AGRI”)))((TITLE-ABS-KEY(nanoparticles OR nanomaterials AND toxicity) AND DOCTYPE(ar) AND PUBYEAR > 1999 AND PUBYEAR < 2021) AND (LIMIT-TO (SUBJAREA,”ENVI”) OR LIMIT-TO (SUBJAREA,”AGRI”))).