Which of the following causes damage to buildings containing calcium and is responsible for causing cough and throat congestion in humans?

The common components of photochemical smog are

$A$ factory was started near a village. Soon,the villagers began experiencing the presence of undesirable gases in the atmosphere,leading to symptoms like headaches,chest pain,colds,dry throats,and breathing difficulties. The villagers blamed the smoke emitted from the factory chimney for these problems. Describe what might have happened and provide the chemical equations to support your explanation.

Which of the following forms holes in the ozone layer?

Green chemistry refers to reactions which . . . . . .

Ozone is considered an important component in the stratosphere because $......$