SNC1DW Chapter 1

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  1. Ecosystem
    The interacting parts of a biological community and its environment

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  2. Sustainable ecosystem
    An ecosystem that is capable of withstanding pressure and giving support to a variety of organisms.

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  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

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

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

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  8. Biosphere
    The regions of Earth where living organisms exist

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  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.

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  11. Photosynthesis
    A process that changes solar energy into chemical energy

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  12. Trophic level
    A category of organisms that is defined by how the organisms gain their energy

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  13. Biomass
    The total mass of living organisms in a defined group or area

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  14. Trophic efficiency
    A measure of the amount of energy or biomass transferred from one trophic level to the next higher trophic level

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  15. Bioaccumulation
    A process in which materials, especially toxins, are ingested by an organism at a rate greater than they are eliminated.

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

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  17. Cellular respiration
    A process that releases energy from organic molecules, especially carbohydrates, in the presence of oxygen

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  18. Fermentation
    A process that releases energy from organic molecules, especially carbohydrates, in the absence of oxygen

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  19. Greenhouse gases
    Atmospheric gases that prevent heat from leaving the atmosphere, thus increasing the temperature of the atmosphere

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  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

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  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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Card Set:
SNC1DW Chapter 1
2014-05-28 02:19:12
science biology ecology

Glossary terms and definitions for chapter 1.
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