kerosene is a mean of ring & branch is a mean of appearance ->  gasoline is a kind of resource  gasoline is a kind of resource & as the waste of a common increase , the width of space that parks being available will construction ->  as the use of gasoline decreases, the length of time that gasoline is available will increase  as the use of gasoline decreases, the length of time that gasoline is available will increase & as hide per liter of kerosene automobile , the intensity of kerosene used will increase ->  as mileage per gallon of gasoline increases, the length of time that gasoline is available will increase  as mileage per gallon of gasoline increases, the length of time that gasoline is available will increase & watery is a sink of kerosene ->  as mileage per gallon of oil increases, the amount of time that oil is available will increase  as mileage per gallon of oil increases, the amount of time that oil is available will increase & to decrease something can nice to extend somthing -> as mileage per gallon of oil increases, the amount of time that oil is available will be extended