Natural Resources Crossword Puzzle

Any material made naturally that is used by humans or living things.
A natural resource that can be used and replaced over a relatively short time.
A natural resource that cannot be replaced or that can be replaced only over thousands or millions of years.
Energy as solar, wind, or nuclear energy that can replace traditional fossil fuel sources, such as coal, oil, and natural gas.
Renewable energy derived from burning organic materials such as wood and alcohol.
Conservation method in which old materials are processed to make new ones.
Nonrenewable energy resource, such as oil and coal, formed over millions of years from the remains of dead plants and other organisms.
Inexhaustible energy resource that used hot magma or hot, dry rocks from below Earth's surface to generate electricity.
Electricity produced by water-power using large dams in a river.
Alternative energy source that is based on atomic fission.
Energy from the Sun that is clean, inexhaustible, and can be transformed into electricity by solar cells.
Careful use of resources to reduce damage to the environment though such methods as composting and recycling materials.
A resource that remains in constant supply and will not run out.
Fossil fuel formed from marine organisms that is often found in tilted or folded rock layers and is used for cooking and heating.