Ibyuma bitagira umwanda ni impfunyapfunyo y’ibyuma birwanya aside, umwuka, umwuka, amazi nibindi bitangazamakuru byangirika cyangwa ibyuma bitagira umwanda bizwi nkicyuma kitagira umwanda; kandi izarwanya kwangirika kwitangazamakuru ryangiza imiti (acide, alkalis, umunyu, nibindi byangiza imiti) kwangirika kwicyuma bita ibyuma birwanya aside.
Soma byinshi