Across
- 4. When organisms fight over a resource that they both need.
- 5. When an organism no longer exists.
- 6. When a type of organism is in danger of ceasing to exist.
Down
- 1. The features that somebody has to help it survive in a place.
- 2. Differences between the characteristics of organisms.
- 3. The range of different species of organisms in an area.
- 5. All the physical environmental factors and all the organisms found in the area.