Natural earthquakes are caused by ______________.
A. Earth’s crust
B. Deep seas
C. Peak mountains
D. Forests
Author: Aroma Ann
Mycorrhiza represents ____________.
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
Grassland of USA is referred to as ____________.
A. Prairies
B. Steppes
C. Pampas
D. Veldts
The unit of measurement of intensity of sound is in ______________.
A. Decibels
B. Lux
C. Parsec
D. Candela
Which of the following interactions will not promote co evolution?
A. Commensalism
B. Mutualism
C. Parasitism
D. Interspecific competition
The gas responsible for the greenhouse effect on Venus is ____________.
A. Carbon dioxide (CO2)
B. Oxygen (O2)
C. Ozone (O3)
D. Nitrogen (N2)
E. Water vapor (H2O)
What is the only continent on earth where Giraffes live in the wild?
A. Africa
B. India
C. Pakisthan
D. Srilanka
The Residential and Commercial wastes mainly consist of ____________.
A. Food wastes
B. Card board
C. Packaging materials
D. None of the above
The combination of nitrogen oxides and hydrocarbons in the presence of the sunlight causes ____________.
A. Global warming
B. Smog
C. Ozone hole in the atmosphere
D. Acid rain
Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth’s atmosphere?
A. Oxygen and nitrogen
B. Nitrogen and carbon dioxide
C. Ozone and oxygen
D. Water vapor and carbon dioxide
