ExamPlay Light Logo
Logga in

WAEC - Chemistry (1990 - No. 18)

Which of the following pollutants is biodegradable ?
Sewage
Plastics
Metal scrape
Lead compounds
Hydrogen sulphide

Kommentarer (0)

Logga in för att kommentera
Annons
BrainBehindX Inc Logo
©2026; Drivs av BrainBehindX Inc