Across
- 7. Organelle responsible for creating ATP energy.
- 9. A weather system where air rises, often bringing clouds, rain, and storms.
- 10. A structure made of DNA and proteins that carries genetic information in cells.
- 12. A weather system where air sinks, usually causing clear and calm weather.
Down
- 1. The layer of gases that surrounds Earth and supports life.
- 2. where two air masses meet
- 3. The variety of plants, animals, and other living things in a particular area or on Earth.
- 4. The average weather conditions in a place over a long period of time.
- 5. The molecule in cells that holds the instructions for how living things grow and function.
- 6. Organelle that contains DNA and instructions for the cell.
- 8. the species that first populated an area after a disaster
- 11. Succession that happens when there is only rock. No living organisms.