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
D.
CO2, CFC, CH4 and NO2 gases
Greenhouse effect is a natural process that warms the Earth's surface. It can also be defined as heating of biosphere caused by incoming solar radiations and inhibiting the outgoing radiations. The warm air inside green house causes heating. It is caused by the gases like CO2, CFCs, CH4 and NO2.
Nutrient enrichment of a lake will cause
eutrophication
stratification
biomagnification
bioaccumulation
For a clean environment, which one following is not essential?
Producer
Consumer
Decomposer
Polluter
SO2 pollution is indicated by
Desmodium (grasses)
Sphagnum (mosses)
Usnea (lichens)
Cucurbita (climbers)
Freon gas causing stratospheric O3 depletion is mainly released from
refrigerator
automobile
thermal power plant
steel industry
Which of the following diseases is related to cadmium pollution?
Minamata
Pneumoconiosis
Anaemia
Itai- Itai
