Ecosystem and Environment Quiz

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Across
  1. 2. the highest gas in air
  2. 4. top layer of Earth
  3. 5. mineral that Earth core made of
  4. 6. the tickest layer of Earth
  5. 8. an opening in the Earth's crust through which lava, ash, and gases erupt
  6. 9. it forms by convergent plate tectonics
Down
  1. 1. organisms found in the ecosystem
  2. 3. mineral that Earth core made of and this element can be used for dental braces
  3. 7. non-living factor in the ecosystem such as air, water, soil etc
  4. 10. the ecosystem that a land-based community of organisms and the interactions of biotic and abiotic