Environmental Science 2

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 3. An abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous ___ (6)
  2. 5. Coins collectively (plural) (7)
  3. 6. A system formed by the interaction of a community of organisms with their physical environment (9)
  4. 10. The process of giving off or exhaling water vapor through the skin or mucous membranes (13)
  5. 11. A person who uses goods or services (plural) (9)
  6. 12. The total mass of living matter in a given unit area (7)
  7. 13. A community of organisms where there are several interrelated ___ chains (7)
  8. 15. In a condition of biological rest or suspended animation (7)
  9. 16. A common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas (8)

Down

  1. 1. A community of organisms where each member is eaten in turn by another member (9)
  2. 2. The prevailing psychological state (7)
  3. 4. The process of becoming a vapor (11)
  4. 7. Clear liquid we drink that falls as rain (5)
  5. 8. The number of inhabitants in a given place (10)
  6. 9. Any substance that can be taken in by a green plant and used in organic synthesis (plural) (9)
  7. 14. An erect or climbing bean or pea plant of the family ___ (plural) (7)