Vocabulary Crosswords

12345
Across
  1. 2. relating to the study of the earth's physical structure and substance
  2. 5. a mechanical device that controls the flow of liquid, gas, etc., by opening and closing
Down
  1. 1. the place or environment where a plant or animal naturally or normally lives and grows
  2. 3. one who defends or maintains a cause or proposal
  3. 4. the remains of something broken down or destroyed