Crossword Time

1234567
Across
  1. 6. Change in the environment that produces response
  2. 7. Openings on leaves for gas exchange
Down
  1. 1. Respiratory organ in fishes
  2. 2. A desert plant
  3. 3. Place where an organism live
  4. 4. Plant that closes on touching
  5. 5. Animal that can live in water and land