DDT was banned in USA in the year?
1977
1972
1973
1980
The river in dispute between Brazil and Argentina?
La plata
Orinaco
Mississipi
Missouri
‘Minamata disaster’ in Japan was caused by pollution due to?
Lead
cadmium
zinc
mercury
The countries which get benefit from Nile river are?
Sudan and LIbya
Libya and Egypt
Egypt and Sudan
Libya and kenya
The waters of the rivers are received primarily from
Snow
precipitation
hail
sleet