Across
- 6. The regulation of the internal environment, for example temperature.
- 7. The effect of one thing on another.
- 10. Caused or produced by humans.
- 12. Relating to land.
- 13. This system includes the heat.
Down
- 1. A variable used in scientific experiments.
- 2. The section of a scientific report that includes the data.
- 3. The process where green plants use sunlight to create nutrients from carbon dioxide and water.
- 4. All the living organisms that live in an area and the interactions of their environment.
- 5. All populations of different species that live in the same place at the same time.
- 8. A measure of cold or warmth.
- 9. The amount of species of plants and animals in the environment.
- 11. This system includes the lungs