You can do it!

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Across
  1. 1. - Requiring immediate action.
  2. 8. - Able to be used again naturally.
  3. 11. - To keep something going.
  4. 12. - The path of something in motion.
  5. 14. - The impact of human activity on Earth.
  6. 15. - Exceeding limits or boundaries.
  7. 16. - Things we use from nature or other sources.
  8. 17. - The study of living things and their environment.
  9. 20. - Avoiding excess; staying balanced.
  10. 21. - Growing faster and faster.
  11. 22. - Cutting down forests.
  12. 23. - Fairness or justice.
  13. 24. - Sickness affecting people.
  14. 25. - To step in to solve a problem.
  15. 26. - A limitation or restriction.
  16. 27. - Being very poor.
  17. 28. - Protecting and preserving something.
  18. 29. - Release of harmful substances.
Down
  1. 2. warming - Earth getting hotter due to pollution.
  2. 3. - A set of ideas or beliefs.
  3. 4. - The number of people in an area.
  4. 5. - An increase in size or amount.
  5. 6. - Tools and machines used to solve problems.
  6. 7. - Harmful substances in the environment.
  7. 9. - The natural world around us.
  8. 10. - Limited and not replaceable.
  9. 13. - Meeting today's needs without harming future generations.
  10. 18. - A sudden failure or breakdown.
  11. 19. - Using up resources.
  12. 24. - Progress or improvement.