Glossary Terms Chapter 1

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  1. Ecosystem
    all the interacting parts of a biological community and its enviroment
  2. Sustainable Ecosystem
    an ecosystem that is capable of withstanding pressure and giving support to a variety of organisms
  3. Biotic
    the living parts of an ecosystem
  4. abiotic
    the non-living parts of an ecosystem
  5. Lithosphere
    the hard part of earth's surface
  6. Hydrosphere
    all the water found on earth including,lakes,oceans, and ground water
  7. Atmosphere
    the layer of gases above earth's surface
  8. Biosphere
    the regions of earth where living organisms exist
  9. Nutrients
    a chemical that is essential to all living things and is cycled through ecosystems
  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 many 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 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 trophic 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 the 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 from acids
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Glossary Terms Chapter 1
Glossary Terms
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