SNC1DW Chapter 1

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Author:
Jaimin_Jethva
ID:
275513
Filename:
SNC1DW Chapter 1
Updated:
2014-05-27 22:19:12
Tags:
science biology ecology
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Description:
Glossary terms and definitions for chapter 1.
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  1. Ecosystem
    The interacting parts of a biological community and its environment

  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

    i.e. insects, plants, animals
  4. Abiotic
    The non-living parts of an ecosystem.

    i.e. air, water, soil
  5. Lithosphere
    The hard part of Earth's surface

  6. Hydrosphere
    All the water found on Earth, including lakes, oceans, and groundwater.

  7. Atmosphere
    The layer of gases above Earth's surface

  8. Biosphere
    The regions of Earth where living organisms exist

  9. Nutrients
    Chemicals that are essential to living things and is cycled through ecosystems

    i.e. water, oxygen, nitrogen
  10. Eutrophication
    A process in which nutrient levels in aquatic ecosystems increase, leading to an increase in the population of primary consumers.

  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 materials, especially toxins, are ingested by an organism at a rate greater than they are eliminated.

  16. Biomagnification
    When concentration of a material/toxin accumulates in progressively higher concentrations toward the top of the food chain

  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
    Atmospheric gases that prevent 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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