Across
- 3. The movement and exchange of carbon through the Earth, including living organisms, rocks, and the atmosphere
- 6. A living organism in a food chain which gains it's energy from eating other organisms
- 10. Process that all living things go through to create the energy they need to live.
- 11. A gas which is taken in by respiring organisms and released by photosynthetic organisms
- 12. Process where dead organic substances are broken down into simpler matter and carbon dioxide is released
- 19. A gas that is released due to respiration
- 20. Process where plants use sunlight and carbon dioxide and water to make their food (glucose)
- 21. A biological community of interacting organisms and their physical environment
- 22. Natural warming of Earth’s surface, caused by heat from the sun being absorbed and emitted into the atmosphere
- 23. The regions of the surface and atmosphere of the earth or another planet occupied by living organisms.
Down
- 1. A term used to describe the enormous variety of life on Earth
- 2. A simple aquatic plant which carries out a lot of photosynthesis in the ocean
- 4. A mixture of gases that surrounds the Earth
- 5. non-living things in the environment
- 6. Long-term shifts in temperatures and weather patterns
- 7. The purposeful clearing of forested land, carbon dioxide is released when the plant decomposes
- 8. The fourth most abundant element in the universe
- 9. A chemical reaction where fuels are exposed to heat and oxygen and carbon is released
- 13. A living organism that is the first part of the food chain that produces sugar using the sun
- 14. the study of the relationships between living organisms, including humans, and their physical environment
- 15. A greenhouse gas which is emitted from cattle burps and decomposing rubbish
- 16. A sugar that is made during photosynthesis
- 17. Made from decomposing plants and animals which have broken down under the layers of sediment over millions of years
- 18. living things in the environment