Which one of the following is mainly responsible for green houses effect?
SO2
CO2
CO
O2
B.
CO2
Green house effect refers to selective energy absorption by CO, in the atmosphere which allows short wavelength energy to pass through but absorbs longer wavelength and reflects heat back to earth. It is caused by carbon dioxide, methane, nitrogen dioxide and water vapour.
The true statement about 'green-house effect' is that it is caused by :
CO2 only
SO2 only
CO2 and SO2
CO2, CFC, CH4 and NO2 gases
SO2 pollution is indicated by
Desmodium (grasses)
Sphagnum (mosses)
Usnea (lichens)
Cucurbita (climbers)
For a clean environment, which one following is not essential?
Producer
Consumer
Decomposer
Polluter
Which of the following diseases is related to cadmium pollution?
Minamata
Pneumoconiosis
Anaemia
Itai- Itai
Nutrient enrichment of a lake will cause
eutrophication
stratification
biomagnification
bioaccumulation
Freon gas causing stratospheric O3 depletion is mainly released from
refrigerator
automobile
thermal power plant
steel industry
