Across
- 2. New think2ing transcendentalist
- 3. Demographer
- 7. Evolution Homosapiens
- 8. Bomb Cholera
- 10. Discover the cure and create Inmunity to Viruela
Down
- 1. Get the independence of India
- 4. "Walden" Civil disobedience"
- 5. Published more than 300 articles about nature
- 6. National parks and national forests
- 9. America's first environmentalist