We should need to conserve fuel because it is a natural resource. If we will waste it like for example; when we are driving a vehcile and the traffic signal becomes red and if we now that if the signal will change after several minutes and we will not turn off the vehcile then we are our a fool because we will waste fuel and it will also waste our money because we first go to petrol pumps and make full the tanks of are vehcile by giving money. So Save fuel and your money as well
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We should conserve fuel for:
use it in future.
to keep our environment safe.
bcz it is non renewable energy , it takes millions of year to form agn so if it is finished  the world will lack energy .