THE EFFECT OF HEAVY METALS ON THE NITROGEN FIXATION ACTIVITY OF CYANOBACTERIA. Eureka Journal of Agricultural Science & Bio-Innovation, [S. l.], v. 2, n. 3, p. 19–26, 2026. Disponível em: https://eurekaoa.com/index.php/7/article/view/577. Acesso em: 4 apr. 2026.