Logg på
WAEC - Biology (2016 - No. 41)
Use the diagram above that shows the effect of nitrates on water bodies Study it carefully and answer questions.
Another cause that could lead to the phenomenon in the diagram is
exhaust from cars
oil spillage
dumping of sewage
excess rainfall
Kommentarer (0)
Logg inn for å kommentere
Annonse
Tillat at javascript laster denne siden ordentlig
