A rain is called acid rain when its pH is
_________is a mutagenic pollutant.
Brown air causes heart and lung problems and they are carcinogenic. They are caused by
Substance which is not degraded by microorganisms is
Some times secondary pollutants like ozone, PAN (Peroxyacetyl nitrate), HNO3, H2SO4 formed from primary pollutants are more toxic than primary pollutants. This phenomenon of increased toxicity in pollutants is called
Ozone day is celebrated on
Slash and burn agriculture is a characteristic of
Which one of the following does not contribute to Green House Effect?
Rise of atmospheric temperature because of high concentrations of carbon dioxide is known as
______________is the most commonly used method to remove particulate matter from the environment.