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  1. 2. Plastic materials produced from renewable biomass sources.
  2. 4. The introduction of contaminants into the natural environment that cause adverse change.
  3. 5. Change the form, character, or function of something.
  4. 6. The natural home or environment of an animal, plant, or other organism.
  5. 8. he way you earn the money you need to pay for food, a place to live, clothing, etc.
  6. 10. A forest characterized by high and continuous rainfall, with annual rainfall in the case of tropical.
  7. 12. An animal that moves pollen from the male anther of a flower to the female stigma of a flower.
  8. 13. The process of converting waste materials into new materials and objets.
  9. 15. The process of protecting an environment and returning it to its natural state.
  10. 17. An area of land that has not been used to grow crops or had towns and roads built on it.
  11. 19. The broadest sense, is the natural, physical, or material world or universe.
  12. 20. All of the people born and living at about the same time, regarded collectively.
  13. 21. The preservation or efficient use of resources, or the conservation of various quantities under physical laws.
  14. 23. A contagious bacterial disease characterized by fever and delirium.
  15. 24. The long-term average of weather, typically averaged over a period of 30 years.
  1. 1. Plant or animal products that can be grown and harvested extensively for profit or subsistence.
  2. 3. A person who believes strongly in political or social change and takes part in activities such as public protests to try to make this happen.
  3. 7. The variety and variability of life on Earth.
  4. 9. Aboveground portion of plant community or crop.
  5. 11. Land covered with trees.
  6. 14. The air, water, and land in or on which people, animals, and plants live.
  7. 16. The branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
  8. 17. All organisms that grow or live wild in an area without being introduced by humans.
  9. 18. Very small pieces of plastic that pollute the environment.
  10. 22. Land that is used for or is suitable for farming.