Chapter 2 science flash cards

Card Set Information

Chapter 2 science flash cards
2012-09-25 21:28:38

Mrs r days science chapter 2 flash cards by Aamir
Show Answers:

  1. What is population?
    Population is all the individuals of a species that occupy a particular geographic area at a certain time.
  2. What is exponential growth?
    Accelerating growth that produces J-shaped curve when  the population is graphed against time.
  3. What are limiting factors?
    Limiting factors are factors that limit the growth, distrubution, or amount of a population in an ecosystem.
  4. What is carrying capacity?
    The size of a population  that can be supported indefinetley by the available reasources and services of an ecosystem.
  5. What is a Ecological Niche?
    The way in which an organism occupies a position  in an ecosystem, including all the  biotic and abiotic factors.
  6. What are predators?
    An organism that kills and consumes other organisms.
  7. What are prey?
    Prey are an organism that are eaten as food by predators.
  8. What is mutualism?
    A symbolic relationship between two species in which both species benifit from the relationship.
  9. What are parasites?
    Are organisms whose niche is dependent on a close association with a larger host organism.
  10. What is competition?
    When two or more organisms compete for the same reasource in the same location at the same time.
  11. What is sustainable use?
    Use that does not lead to long- term depletion of a reasource or affect the diversity of the ecosystem from which the reasource was obtained.
  12. What is Doubling time?
    Doubling time is the period of time that is required for a population to double.
  13. What is an ecological footprint?
    Anecological foot print is a measure of the impact of an individual or population  on the environment in terms of energy consumption, land waste, and wast production.
  14. What is unsustainable?
    Unsustainable is a pattern of activities that leads to a decline in the function of an ecosystem.
  15. What is Sustainability?
    Sustaiablity is the use of earths reasources including land and water , at levels that can countinue forever.
  16.  What are Ecosystem services?
    Ecosystem services are the benifits experienced by organisms, including humans that are provided by sustainable ecosystems.
  17. What is desrtification?
    The change of a non-desert land into a desert which may rsutl in climate change or from unsustainable  farming or water use.
  18. What is Ecotourism?
    Ecotourism is a form of toursim that is sensitive to the health of an ecosystem and involves recreational activities provided by sustainable ecosystems.