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PSSA science vocab 5
Term | Definition |
---|---|
closing the loop | A link in the circular chain of recycling events that promotes the use of products made with recycled materials. |
non-renewable resources | Substances (e.g., oil, gas, coal, copper, gold) that, once used, cannot be replaced in this geological age. |
renewable | A naturally occurring raw material or form of energy that will be replenished through natural ecological cycles or sound management practices (e.g., the sun, wind, water, trees). |
recycling | Collecting and reprocessing a resource or product to make into new products. |
composting | The process of mixing decaying leaves, manure and other nutritive matter to improve and fertilize soil. |