Across
- 2. Type of forest biome characterized by cold weather and coniferous (needly) trees.
- 5. Organisms very important to the nitrogen cycle.
- 7. All of the water on Earth.
- 11. Source of Earth's energy.
- 13. Chemical element that forms the structure of most biological molecules.
- 14. Water changes from a gas to a liquid in this process.
- 15. Non-living component of an ecosystem.
- 16. Cold biome characterized by large areas of shrubby plants with few or no trees.
- 17. Another word for heat is __________ energy.
- 21. All of the organisms of one species living in an area.
- 22. Living component of an ecosystem.
- 24. Organism that can make its own food.
- 26. Organism that changes dead organisms and waste back into nutrients.
- 27. Organism that must eat other plants or animals to obtain energy.
- 28. The place where an organism lives.
- 29. A step in a food chain is called a ________ level.
- 30. Energy-rich sugar formed during photosynthesis.
Down
- 1. Biome characterized by very low precipitation.
- 3. The thin layer of gas surrounding Earth.
- 4. Greenhouse ________ act like a blanket, keeping the planet warm.
- 6. Cold, salty water is more _________ than warm, less salty water.
- 8. Water changes from a liquid to a gas in this process.
- 9. Carbon dioxide + water + sunlight --> glucose + oxygen
- 10. Any form of water falling from the sky - rain, hail, sleet, etc.
- 12. An organism's job or role.
- 18. The height of a land mass above sea level.
- 19. Distance measured in degrees north or south of the equator.
- 20. Another name for a producer.
- 23. Another name for a consumer.
- 24. Water travels through tiny spaces between rocks and soil in this process.
- 25. Average pattern of weather conditions over time.