1.We may use more and more battery vehicles instead of the polluting vehicles.
2.Limiting the usage of bikes, and cars for short distances, and by increasing the usage of the cycles,etc...
3.By using Compressed Natural Gas instead of using petrol, diesel, etc...
4.By taking possible measures to reduce the release of greenhouse gases, as these are responsible for the depletion of the ozone layer, and Global Warming.

Thank you.
Hope this will help you.