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Across 3. A measure of all of the different organisms in an ecosystem 6. The number of organisms of a certain species e.g. all the tadpoles in a pond 9. Technique used to measure invertebrates living on tree or bush branches 11. Place where an organism lives 12. Square used to measure non-moving organisms

Down 1. Non-living factors that you can measure e.g. light intensity 2. Trap used to measure small ground crawling organims (invertebrates) 4. Interaction between members of the community and their physical habitats 5. All of the different species (animals, plants, bacteria and fung) in an ecosystem 7. Organism that is caught and eaten by another organims 8. Animals that catches and eats other organisms 10. Living factors like disease, food availability and predation