List gases which are responsible for green-house effect.
Greenhouse gases are as follows :
$(1)$ carbon dioxide $\left(\mathrm{CO}_{2}\right)$
$(2)$ methane $\left(\mathrm{CH}_{4}\right)$
$(3)$ water vapour $\left(\mathrm{H}_{2} \mathrm{O}\right)$
$(4)$ nitrous oxide $(NO)$
$(5)$ ozone $\left(\mathrm{O}_{3}\right)$
$(6)$ chlorofluorocarbons ($CFCs$)
What is responsible for soil pollution ?
Fill in the Blanks :
$(1)$ Hydrocarbon compounds are made from ........ and ....... .
$(2)$ ......... has a capacity to stop the flow of oxygen.
$(3)$ ........ is formed by attaching carbon monoxide with hemoglobin in blood.
Polar stratospheric clouds facilitate the formation of .... .
What efforts are being made by the government to save the Taj Mahal ?
How the nitrogen oxide is made ? and How the excessive amount of nitrogen oxide is harmful ?