Across
- 3. to use less
- 5. a fuel, such as coal, oil, or natural gas, formed in the earth from plant and animal remains over millions of years.
- 7. Resources that can be replaced within a lifetime.
- 8. to use items again after they have been used.
Down
- 1. Resources that can’t be replaced within a lifetime.
- 2. Resources taken from the earth and nature, then used by humans.
- 4. the careful use of resources so that they will last as long as possible.
- 6. to process used products into new products by using the materials again