20 you try to conserve a natural resource you try to use less of it so it does not get used up so 21 One way that people conserve fuel like gasoline is by riding a bicycle or walking when the 22 is short instead of driving. Water is a very important natural resource because we all...
that Earth's natural resources are limited,and can do things to help conserve(节约) those resources.(5) Ayou try to conserve a natural resource,you try to use less of it,so it does not get used up so(6) D.One way that people conserve fuel,like gasoline,is by...