Flowers and Leafs as Natural Acid-Base Indicators: A sustainable alternative approach for teaching Chemistry and Biology. Research, Society and Development, [S. l.], v. 14, n. 4, p. e2614448589, 2025. DOI: 10.33448/rsd-v14i4.48589. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/48589. Acesso em: 28 jun. 2025.