State two ways by which global warming can be reduced.

Global warming can be reduced by reducing the emission of green house gases by :

1. Using different fuels which release less green house gases:
   1. Liquefied Petroleum Gas [L.P.G.] — contains mostly propane [C₃H₈]
   2. Liquefied Natural Gas [L.N.G.] — contains mostly methane [CH₄]
   3. Compressed Natural Gas [C.N.G.] — similar to L.P.G. but is not liquefied.
2. Using renewable energy resources like :
   
   1. Solar energy [from sun's stored energy]
   2. Wind energy [from windmills]
   3. Hydropower energy [from high dams]