AP Biology: Ecology

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Across
  1. 3. the percentages of the population is stable among all ages
  2. 4. dead organic matter
  3. 6. planting organisms (prokaryotes, fungi, plants) in ecosystems to detoxify them from harmful pollutants
  4. 7. pathogens that are transferred from animals to humans; they are highly contagious and spread quickly through humans and animals alike
  5. 8. survivorship curve characterized by a roughly constant mortality rate/survival probability experienced regardless of age; ex. some birds, lizards
  6. 10. survivorship curve characterized by high age-specific survival probability in early and middle life, followed by a rapid decline in survival in later life; ex. humans, large mammals
  7. 15. component of amino acids and nucleic acids; consumes 80% of the atmosphere
  8. 17. living things (animals, plants, bacteria)
  9. 19. a major terrestrial or aquatic life zone characterized by vegetation type or physical environment
  10. 20. an interaction between species that benefits one and has no effect on the other
  11. 22. framework of all organic molecules; in atmosphere and fossil fuels
  12. 23. living things (sunlight, rocks, soil, temperature, salinity, water, nutrients, climate)
Down
  1. 1. an interspecific interaction that benefits both species
  2. 2. a type of dispersion in which individuals form into small, dense groups; ex. sea stars grouped around a food source
  3. 5. the highest percentage of the population is in the young ages
  4. 9. density-dependent selection; selection for life history traits that are sensitive to population density; ex. mature trees in an old-growth forest; (regulated by competition for resources, territoriality, disease, predation, toxic wastes, intrinsic factors)
  5. 11. density-independent selection; selection for life history traits that maximize reproductive success in uncrowded environments; ex. rhinoceros reproduction
  6. 12. a harmless species mimicking (in appearance) a harmful one; ex. larva of hawk mantis puffs up to look like small snake
  7. 13. very fine patterns, such as a community of organisms living under a log
  8. 14. a type of dispersion in which individuals are evenly spaced; ex. penguins resting on small islands to resist aggressive fights
  9. 16. the first organisms to colonize an area after the wipe-out of the previous ecosystem
  10. 18. camouflage that makes a species hard to spot;
  11. 21. two harmful species look like each other to project multiple threats; ex. cuckoo bee and yellow jacket