Which one of the flowing is the correct percentage of the two (out of the total of 4 ) green-house gases that contribute to the total global warming?
CFC 14%, CH4 20%
CO2 40% CFCs 30%
N2O 6%, CO2 86%
N2O 6%, CO2 86%
A.
CFC 14%, CH4 20%
The gases, which are transparent to solar radiation but retain and partially reflect back long wave heat radiations are called greenhouse gases. Recently, the concentration of green -house effect that is resulting in increases the mean global temperature. It is called global warming. The various greenhouse gases are CO2 (warming effect 60%) CH4 (20%)<CFC (14%) and nitrous oxide - N2O (6%)
According to central pollution control Board (CPCB), which particulate size in diameter (n micrometres) of the air pollutants is responsible for greatest harm to human health?
2.5 or less
1.5 or less
1.0 or less
1.0 or less
World summit on sustainable development (2002) was held in
Brazil
Sweden
Argentina
Argentina
About 70% of total global carbon is found in
grasslands
agro -ecosystem
Oceans
Oceans
Modern detergents contain enzyme preparations of
acidophiles
alkaliphiles
thermoacidophiles
thermoacidophiles
