apes

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Across
  1. 4. underground layer of water-bearing material, consisting of permeable or fractured rock, or of unconsolidated materials.
  2. 8. when a liquid turns into a gas.
  3. 10. inversion layer in the atmosphere in which air temperature increases with height.
  4. 11. organic matter used as a fuel, especially in a power station for the generation of electricity.
  5. 14. usable power
  6. 16. cut down and remove every tree from an area
  7. 17. relating to or resulting from living things, especially in their ecological relations.
  8. 18. to not exist
  9. 19. the process of burning something.
  10. 20. a rising of seawater, magma, or other liquid.
  11. 24. allow animals to graze (an area, such as a pasture) to the point of damaging vegetational cove
  12. 25. a method used to extract natural gas and oil from deep rock formations known as shale
  13. 27. rain precipitation that is unusually acidic
  14. 28. symbiosis that is beneficial to both organisms involved.
  15. 29. a group of fibrous minerals used to strengthen and fireproof materials.
Down
  1. 1. smog a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities
  2. 2. the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers
  3. 3. physical rather than biological; not derived from living organisms.
  4. 5. the tidal mouth of a large river, where the tide meets the stream.
  5. 6. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
  6. 7. the change in the characteristics of a species over several generations
  7. 8. a biological community of interacting organisms and their physical environment.
  8. 9. make or form (sloping land) into a number of level flat areas resembling a series of steps.
  9. 12. electricity generated from hydropower
  10. 13. surface organic layer of a soil that consists of partially decomposed organic matter, derived mostly from plant materia
  11. 15. a microbial process by which reduced nitrogen compounds (primarily ammonia) are sequentially oxidized to nitrite and nitrate
  12. 21. the role an organism plays in a community
  13. 22. energy from heat within the earth
  14. 23. a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life.
  15. 26. radioactive gas that has no smell, colour or taste.