Biology Unit 3

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Across
  1. 2. The chemical energy remaining after producers lose energy through respiration - NET ... PRODUCTION
  2. 3. The place where an organism normally lives.
  3. 6. A community of organisms interacting with their physical environment.
  4. 9. Numerical measure used to compare biodiversity between communities - ... Diversity Index
  5. 10. Gradual change in community structure over time following disturbance - ecological ...
  6. 11. An area with similar climate, geology, soils and biodiversity.
  7. 12. The maximum population size an environment can sustainably support - ... CAPACITY
  8. 14. A group of organisms capable of producing fertile offspring.
  9. 17. A measure of how evenly individuals are distributed among species - Species ...
  10. 19. A small specialised area within a larger habitat.
  11. 20. A large geographic region characterised by climate and dominant organisms.
  12. 21. The first organisms to colonise a newly disturbed area.
  13. 24. The feeding position of an organism in a food chain - ... Level
  14. 25. J-shaped population growth under ideal conditions with unlimited resources
  15. 28. A sampling line used to study changes across an environmental gradient.
  16. 29. The variety of life at genetic, species and ecosystem levels.
  17. 30. Sampling different habitat zones separately to improve representation.
Down
  1. 1. Hierarchical classification system based on physical characteristics.
  2. 4. The total mass of living organic matter in an area.
  3. 5. A species with a disproportionately large impact on its ecosystem.
  4. 7. The full range of conditions a species could occupy without competition - ... Niche
  5. 8. Mark-recapture method used to estimate population size - ... Index
  6. 13. The portion of a niche actually occupied in nature - ... Niche
  7. 15. The number of different species present in a community - Species ...
  8. 16. S-shaped population growth limited by environmental resources
  9. 18. Sharing resources in different ways to reduce competition
  10. 22. The role and position of a species within an ecosystem.
  11. 23. ... Exclusion: Principle stating that two species cannot occupy the same niche indefinitely.
  12. 26. A square sampling frame used to estimate abundance or percentage cover.
  13. 27. Classification based on comparisons of DNA, RNA or protein sequences - Molecular ....