Ruthless exploitation and pollution of the environment has increased the magnitude of waste materials,which has disturbed the operations of all important:

In the given pie chart,what do $W, X, Y$ and $Z$ represent respectively?

Match the following important dates/events related to environmental issues in India:
$A$. $2002$
$B$. $1$ April $2005$
$I$. Bharat Stage $II$ applicable to all automobiles in the country.
$II$. All buses of Delhi were converted to run on $CNG$.

What measures, as an individual, would you take to reduce environmental pollution?

The effect of pollution is first and most marked on:

What percentage of incoming solar radiation is reflected and absorbed by clouds and gases before reaching the Earth's surface (in $\%$)?