Yr11 IB S2 Exam Revision

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Across
  1. 3. The number of species in an ecosystem.
  2. 6. The preparation of soil by mechanical movement of various types, such as digging, stirring, and overturning
  3. 11. Organisms that feed on dead organic matter
  4. 13. The variety of life forms, their genes, and ecosystems.
  5. 15. The EVS belief that human beings are the central or most important entity on the planet
  6. 16. the top, dark, spongy, organic layer of soil, formed from the decomposition of plant and animal matter
  7. 18. A zone of the ocean where light does not penetrate.
  8. 19. The final stage of ecological succession
  9. 21. An area containing a high proportion of endemic species under threat.
Down
  1. 1. A sustainable management option to manage fish populations
  2. 2. The excessive growth of algae due to nutrient enrichment.
  3. 4. The combined process of water evaporating from land surfaces and transpiring from plants into the atmosphere
  4. 5. Water that exists beneath the Earth's surface in pore spaces and fractures of soil, sand, and rock
  5. 7. The amount of biomass produced by autotrophs in a given area and time.
  6. 8. The worldwide collection of ecosystems interacting with the atmosphere, lithosphere, and hydrosphere
  7. 9. The international agreement designed to protect endangered species.
  8. 10. A simplified way of showing how energy moves through an ecosystem
  9. 12. An approach where inputs, outputs, and energy transfers are all considered.
  10. 14. The process of wind or water removing topsoil.
  11. 17. The amount of energy that decreases as it moves through trophic levels
  12. 20. The area of land where all the water drains into one place