Assertion: Carbon dioxide is one of the main constituent of greenhouse gases.
Reason: In pregent woman increased `CO` level induced premature birth, spontaneous abortion and deformed birth.

Assertion (A) : Carbon dioxide is one of the important greenhouse gases. Reson (R) : It is largely produced by respiratory function of animals and plants.

Assertion (A) : Carbon dioxide is one of the important greenhouse gases. Reson (R) : It is largely produced by respiratory function of animals and plants.

Assertion (A): CO_2 , is a main cause for global warming Reason (R) : Greenhouse gases trap the radiant heat from sun

To find out the international norms to regulate the emission of carbon dioxide. implies Carbon dioxide (CO_2) is the primary greenhouse gas emitted through human activity. implies The international norms to regulate the emission CO_2 are based on Kyoto Protocol. implies This protocol was negotiated in December, 1997 at the city of Kyoto, Japan and came into force on February 16th, 2005. implies As of December 2006, a total of 169 countries have signed the agreement. implies Under this protocol, industrialised countries must reduce their collective emissions of CO_2 and other greenhouse gases to an average of 3 5% against 1990 levels. Why is it necessary to regulate the emission of carbon dioxide ?