Environmental C...

'Smog', which means 'smoke' plus 'fog', irritates eyes and the throat. Smog is mainly caused by pollutants from automobiles and industries when they:

The sixth planet of the solar system is the huge planet Saturn. The beautiful, coloured rings of Saturn are mainly made of:

The smog is formed by:

Photochemical smog always contains

"The final Agent Orange raid in Vietnam took place in 1970; _______ areas have begun to bloom in 1970. But 19 years after the war's end, it seem plain that Agent Orange is killing and maiming human beings, something it never intended to do. The apparent toxic fallout from those clouds ___ is a crop of human miseries including cancers, miscarriages and birth defects - that may persist for decades."
The offensive substance referred to in this quotation is

Which of the following statements regarding ozone is incorrect ?

Ozone depletion is occurring widely in ______________.

'Thermal pollution' means dumping heat in an ecological system, like a lake or a pond. Thermal power plants have to throw some heat into a 'sink' because of they:

One way of preventing pollution of the air is by passing exhaust gases through a filter. Glass fibre or silicone-treated bags of textile material are used for filtering.