Across
- 4. a state of balance where conditions change but stay stable overall
- 7. an organism that breaks down dead things, like fungi and bacteria
- 9. a diagram showing energy flow in an ecosystem
- 15. the movement of water through the environment
- 19. the natural home of an organism
- 20. a series of organisms each eating the next one below it
- 22. dead organic matter like fallen leaves or decaying animals
- 23. organisms like plants that make their own food
- 24. the process where plants use sunlight to make food
- 26. stored underground in soil and rocks
- 27. an animal that eats only plants
- 29. how much sunlight a surface reflects
- 30. an organism that eats other organisms for energy
- 31. a complex network of food chains in an ecosystem
- 32. an animal that eats both plants and meat
- 34. the buildup of toxins as they move up the food chain
- 36. water that flows over the land into rivers and lakes
- 38. a diagram showing the number of organisms at each level
- 40. living things in an environment, like plants and animals
- 41. the different levels in a food chain or food web
- 42. a diagram showing the mass of organisms at each level
- 43. different species living together in an area
- 45. the warming of Earth due to trapped heat from the sun
- 46. water falling from the sky as rain, snow, sleet, or hail
- 47. the process of vapor turning back into liquid
Down
- 1. how organisms break down food to get energy
- 2. a large region with a specific climate and types of plants and animals
- 3. when plants release water vapor into the air
- 5. when nutrients are washed out of the soil by water
- 6. a group of similar organisms that can reproduce together
- 8. the part of Earth where life exists, including land, water, and air
- 10. non-living parts of an environment, like sunlight and water
- 11. the process of water turning into vapor
- 12. the process of adding air to soil or water
- 13. organisms that make their own food using sunlight or chemicals
- 14. a group of the same species living in an area
- 16. energy cannot be created or destroyed, only changed
- 17. energy becomes less useful as it transfers
- 18. organisms that eat other organisms for energy
- 21. a community of living things and their environment
- 25. the role an organism plays in its ecosystem
- 28. the movement of water through soil
- 33. an animal that eats only meat
- 35. a species that shows how healthy an ecosystem is
- 37. making food using chemical energy instead of sunlight
- 39. the variety of life in an area
- 44. water that does not move, like ponds and lakes