if we combine the two longest rivers in the world it will be equal to the registered vehicles in Delhi if they are lined up one after other. What is the name of the these rivers.

The substance which contaminate the air is called air pollution

Which is the gas produced from incomplete burning of fuels such as petrol and diesel ?

side effect if we breath carbon monoxide :

reduced the oxygen-carrying capacity of the blood

name the oxide that smoke contains and combines with fog and other air pollutants to create smog.

----------- are a major source of gaseous pollutants like sulphur dioxide and nitrogen dioxide

the trapping of radiations by the earth's atmosphere is similar to the green house that absorbs the sun's heat and do not let it out. what is the name of the effect?

CFCs are used in refrigerators, air conditioners, aerosol sprays but damages the oxygen layer in the atmosphere

what are the particles emitted from the Mathura oil refinery that had contributed in towards the yellowing of the marble of Taj Mahal

which month do we plant lakhs of trees every year which is also called Van Mahotsav ?

when were the initiatives, Ganga Action Plan and National Mission For Clean Ganga launched respectively ?

bacteria in the water feed on the chemicals and when it dies it serves as food for the algae. thus oxygen level decreases. is this true or false

water suitable for drinking is called ------

a chemical method for purifying water is called