Chapter 1- Ecology

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Chapter 1- Ecology
2014-09-18 11:45:46

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  1. Ecosystem
    All the interacting parts of a biological community and that community's environment.
  2. Sustainable ecosystem
    An ecosystem that is capable of withstanding pressure and giving support to the variety of organisms.
  3. Biotic
    The living or formerly living parts of an ecosystem.
  4. Abiotic
    The non-living parts of an ecosystem.
  5. Lithosphere
    Hard part of Earth's surface; includes rock and soil.
  6. Hydrosphere
    Liquid part of Earths surface; includes saltwater oceans, freshwater lakes, rivers.
  7. Atmosphere
    Layer of gases above Earth surface; includes air.
  8. Biosphere
    Living part of Earth's surface; not separate from other abiotic spheres; includes life in soil,water, and air.
  9. Nutrients
    Chemicals needed by living organisms to survive.
  10. Eutrophication
    A process in which nutrient levels in aquatic ecosystems increase, leading to an increase in the population of primary producers.
  11. Photosynthesis
    A process that changes solar energy into chemical energy.
  12. Trophic level
    A category of organisms that is defined by how the organisms gain their energy.
  13. Biomass
    The total mass of living organisms in a defined group or area.
  14. Trophic efficiency
    A measure of the amount of energy or biomass transferred from one trophic level to the next higher trophic level.
  15. Bioaccumulation
    A process in which an organism ingests materials, especially toxins faster than it eliminates them.
  16. Biomagnification
    A process in which the concentration of ingested toxins increases as it moves from one tropic level to the next.
  17. Cellular respiration
    A process that releases energy from organic molecules, especially carbohydrates, in the presence of oxygen.
  18. Fermentation
    A process that releases energy from organic molecules, especially carbohydrates, in the absence of oxygen.
  19. Greenhouse gases
    An atmospheric gas that prevents heat from leaving the atmosphere, thus increasing the temperature of the atmosphere.
  20. Greenhouse effect
    The warming of earth as a result of greenhouse gases, which trap some of the energy that would otherwise leave Earth.
  21. Acid precipitation
    Rain, snow, or fog that is unnaturally acidic due to gases in the atmosphere that react with water to form acids.