Blue revolution is associated with
A). Agriculture
B). Iron and steel
C). Irrigation
D). Fishing
Water used for paper mills should not contain
A). magnesium
B). sodium
C). iron
D). chlorine
The main atmospheric layer near the surface of earth is
A). troposphere
B). mesophere
C). ionosphere
D). stratosphere
Low level ozone is referred to as __________ ozone.
A). tropospheric
B). stratospheric
C). ionosperic
D). exospheric
Conservation within the natural habitat is
A). insitu conservation
B). exsitu conservation
C). invivo conservation
D). exvivo conservation