Acid Rain- Given above is a photo of statues called Caryatids that were built onthe Acropolis in Athens morethan 2500 years ago. The statues are made of atype of rock called marble. Marble iscomposed of calcium carbonate. In 1980,the original statues were transferred inside themuseum of the Acropolis andwere replaced by replicas. The original statues were being eaten away by acidrain.Normal rain is slightly acidic because it has absorbed some carbon dioxidefrom the air. Acidrain is more acidic than normal rain because it has absorbedgases like sulphur oxides and nitrogen oxides as well. Q.11.Where do these sulphuroxide and nitrogen oxides come from ? *
1 point
they are emitted from laboratory
they are emitted during lightening
they are present in atmosphere
they are emitted from automobiles and factories
