Mugihe uhitamo ibyuma bitagira umuyonga, nigute ushobora kumenya ubwoko bwibyuma bidafite ingese?

1.201 ibyuma bidafite ingese birakwiriye gukoreshwa ahantu humye kandi biroroshye kubora mugihe amazi.

2.304 ibyuma bidafite ingese, bikwiranye n’ibidukikije byo hanze cyangwa ubuhehere, hamwe na ruswa ikomeye kandi irwanya aside.

3.316 ibyuma bidafite ingese, molybdenum yongeyeho, irwanya ruswa nyinshi kandi irwanya ruswa, cyane cyane ibereye amazi yo mu nyanja cyangwa imiti.