Science Unit 1- Chapter 2

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TheGraciePena
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173673
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Science Unit 1- Chapter 2
Updated:
2012-09-26 17:40:03
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Science
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Science Unit 1- Chapter 2
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  1. Population
    All the individuals of a species that occupy a particular geographic area at a certain time. 
  2. Exponential growth
    Accelerating growth that produces a  J-shaped curve when the population is graphed against time.
  3. Limiting factors
    A factor that limits the growth, distribution, or amount of a population in an ecosystem. 
  4. Carrying capacity
    • The size of a population that can be supported indefinietly by the available resources and services of an ecosystem.
  5. Ecological niche
    The way in which an organism occupies a position in an ecosystem, including all the necessary biotic and abiotic factors.
  6. Predator
    An organism that kills and consumes other organism.
  7. Prey 
    An organism that is eaten as food by a predator 
  8. Mutualism
    A symbiotic relationship between two species in which both speices benefit from the relationship
  9. Parasite
    An organism whose niche is dependent on a close association with a larger host organism
  10. Competition
    When two or more organisms compete for the same resource in the same area or ecosystem
  11. Sustainable use
    Use that does not lead to long-term depletion of a resource or affect the divresity of the ecosystem from which the resource is obtained
  12. Doubling time
     The period of time that is required for a population to double in size 
  13. Ecological footprint
    A measure of the  impact of an individual or a population on the environment in terms of energy comsumtion, land use, and waste productions. 
  14. Unsustainable
    A pattern of activity that leads to decline in the function if an ecosystem. 
  15. Sustainability 
    Use of Earth's resources, including land and water, at levels that can continue forever 
  16. Ecosystem services
    The benefits experienced by organisms, including humans, that are provided by sustainable ecosystems. 
  17. Desertification
    • The change of a non-desert land into a desert, which may result from climate change or from unsustainable farming or water use
  18. Ecotourism
    A form of tourism that is sensitive to the health of an ecosystem and involves recreational activities provided by sustainable ecosystems

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