Earth summit was held in ____________.
A. Stockholm in 1972
B. Rio de Jeneiro in 1992
C. Paris in 1992
D. New York in 1972
A. Stockholm in 1972
B. Rio de Jeneiro in 1992
C. Paris in 1992
D. New York in 1972
A. Symbiotic association between a fungus and liverworts
B. Parasitic association between a fungus and an alga
C. Parasitic association between a fungus and roots of plants
D. Symbiotic association between a fungus and roots of higher plants
A. Commensalism
B. Mutualism
C. Parasitism
D. Interspecific competition
A. Prairies
B. Steppes
C. Pampas
D. Veldts
A. Carbon dioxide (CO2)
B. Oxygen (O2)
C. Ozone (O3)
D. Nitrogen (N2)
E. Water vapor (H2O)
A. Decibels
B. Lux
C. Parsec
D. Candela
A. Global warming
B. Smog
C. Ozone hole in the atmosphere
D. Acid rain
A. Africa
B. India
C. Pakisthan
D. Srilanka
A. Food wastes
B. Card board
C. Packaging materials
D. None of the above
A. Oxygen and nitrogen
B. Nitrogen and carbon dioxide
C. Ozone and oxygen
D. Water vapor and carbon dioxide