A. Natural flora of a place
B. Natural balance of our environment
C. Natural geo-chemical cycles
D. All the above three
Pollution
Pollution
A. Lichens
B. Fungi
C. Phytoplanktons
D. None of the above
A. Anaerobiosis
B. Aerobiosis
C. Biological magnification
D. Psammophytes
A. Thermal power plant
B. Diesel engine
C. Hydroelectric power station
D. Pollen grain
A. Make oxygen molecules unavailable to aquatic life
B. Make nitrates unavailable to aquatic life
C. Prevent precipitation
D. Stop the water cycle
A. Eel
B. Crab
C. Sea gull
D. Phytoplanktons
A. Algae
B. Sand
C. Moss
D. Sugar mill effluents
A. Lithosphere
B. Biosphere
C. Atmosphere
D. Hydrosphere
A. Methaelo binemia
B. Minamata
C. Foolish disease
D. Hepatitis
A. Air pollution
B. Water pollution
C. Soil pollution
D. All of these