Sustainability

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Across
  1. 3. The action of using something more than once.
  2. 5. The primary greenhouse gas emitted by human activities.
  3. 9. An arrangement between people to make a regular journey in a single vehicle.
  4. 10. The process of transforming decayed organic material into plant fertilizer
  5. 11. The action or process of converting waste into reusable material.
Down
  1. 1. The ability to be maintained at a certain rate or level.
  2. 2. The type of power obtained by harnessing the energy of the wind.
  3. 4. The type of power obtained by harnessing the energy of the sun's rays.
  4. 6. The air we breathe.
  5. 7. The third planet in our solar system from the sun.
  6. 8. Fuels that come from old life forms that decomposed over a long period of time