Crossword

12345678910
Across
  1. 3. release
  2. 5. scientific knowledge
  3. 9. exact
  4. 10. deny
Down
  1. 1. study of nature
  2. 2. protests for protection of nature
  3. 4. less water
  4. 6. help
  5. 7. home
  6. 8. eco-friendly