Across
- 4. warm areas that receive direct sunlight all year long
- 8. an abundance of this is damaging the Ozone Layer
- 10. the last mass extinction happened 65 ___ years ago
- 11. event where multiple species go extinct
- 12. level of Earth where all life exists
- 13. molecule composed of 3 atoms of oxygen
- 15. cold areas where the sun’s rays strike Earth at a low angle
- 16. this man begun the field of ecology
Down
- 1. Fuels coal,oil and natural gas
- 2. burning Fossil Fuels releases this
- 3. The Ozone Layer protects earth from _____ radiation from the sun
- 5. year-after-year conditions of temperature
- 6. study of interactions of organisms
- 7. even a small amount of UV is harmful in the form of this
- 9. Gases in the atmosphere that trap energy from the sun, heating up Earth
- 14. day-to-day condition of the atmosphere