If we save natural resources, the future could be .......
bright.
Wind and sunlight are ......... resources.
renewable
If we use natural resources .........., they will last into the future.
carefully
Gas and coal come from deep ..........
underground.
All fossil fuels are ......... resources.
non-renewable
Gas and coal are ............ resources.
non-renewable
Oil is a ....... fuel.
fossil
We need natural resources to ..........
live.
Water, trees, air and oil are ........
natural resources.
Car fuel is made from .....
oil.
When electricity runs out, it is called a ........
blackout.
If we run out of natural resources, the future could be .......
bleak.
Moving water has .......
energy.