Chelsea Crossword

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 3. A group of symbols that make a mathematical statement (7)
  2. 7. A proposal intended to explain certain facts or observations (10)
  3. 10. Any animal lacking a backbone or notochord (12)
  4. 11. Bottle that has a narrow neck (5)
  5. 12. Restriction imposed by the government on documents or weapons that are available only to certain (14)
  6. 13. The sequence of events involved in the ___ development of a species or taxonomic group (9)
  7. 15. Of or relating to or comprising atoms (6)

Down

  1. 1. Diffusion of molecules through a semipermeable membrane from a place of higher concentration to (7)
  2. 2. A purging medicine (plural) (7)
  3. 4. The simplest structural unit of an element or compound (8)
  4. 5. Transfer of pollen from the anther to the stigma of a plant (11)
  5. 6. Wetness in the atmosphere (8)
  6. 8. Relating to or based on ___ (12)
  7. 9. Alternative names for the body of a human being (7)
  8. 14. A well-substantiated explanation of some aspect of the natural world (6)