Biogeochemical

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Across
  1. 3. way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. cycle is a biogeochemical cycle that involves the continuous movement of water on, above and below the surface of the Earth.
  2. 5. Cycle nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again.
  3. 6. cycle a biogeochemical cycle that involves the continuous movement of water on, above and below the surface of the Earth.
  4. 7. used in the production of fertilisers, nitric acid, nylon, dyes and explosives
Down
  1. 1. It is noncombustible, but will actively support the burning of combustible materials.
  2. 2. a mineral that makes up 1% of a person's total body weight
  3. 4. chemical element; it has symbol H and atomic number 1
  4. 5. fundamental element in living organisms