By not using them! If you use them, they are gone. But more seriously, it is sensible to try to economise by using less, so they last longer.
recycle, don't litter, use less nonrenewable energy, etc
there is nothing that can save them now. There is no hope for our world, or human kind for that matter.
It is a nonrenewable resource.
many machinery's wont be able to work and other things, but we might be able to find a resolution to some of the things but its best to save of that nonrenewable resource as much as we can.
Nonrenewable.
it is nonrenewable
nonrenewable
Nonrenewable.
nonrenewable
yes it is nonrenewable
Nonrenewable
Nonrenewable