Inicieu la sessió
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
Comentaris (0)
Inicieu sessió per comentar
Anunci
Permet que javascript carregui correctament aquesta pàgina
