Environment crossword puzzle

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Across
  1. 3. A material which comes from petrol
  2. 4. The name that we give to electronic devices at the end of their lifespan
  3. 6. A greenhouse effect gas
  4. 8. A product that is supposed to have been created in an environmentally friendly way
  5. 9. The power created by a source
  6. 10. The exploitation of large numbers of trees for wood and paper
  7. 13. A person who helps a cause without profiting economically
Down
  1. 1. An adjective which describes how we meet the needs of the present without compromising the environment or the future of the planet
  2. 2. a species in danger of extinction because of the melting icecaps
  3. 3. Environmental waste
  4. 5. An adjective that describes a material that can decompose
  5. 7. A person who defends the environment
  6. 9. The coexistence of living and non-living things and the relationship between them
  7. 11. A concept that refers to the deadline of the useful life of a product (which may be artificially "programmed")
  8. 12. A seal which guarantees that a product is organic and ecofriendly