ADV Science Homework (Liliana Alcaraz)

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Across
  1. 3. physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
  2. 5. the process of making an area more urban.
  3. 6. cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems.
  4. 9. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
  5. 10. the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere
Down
  1. 1. excessive richness of nutrients in a lake or other body of water,
  2. 2. the variety of life in the world or in a particular habitat or ecosystem.
  3. 4. he continuous movement of water within the Earth and atmosphere.
  4. 7. prevention of wasteful use of a resource.
  5. 8. the capacity for doing work. ... It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms