Chapter 1

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Author:
Rajbirminhas
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308145
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Chapter 1
Updated:
2015-09-22 21:03:37
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science terms
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science
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chapter 1
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  1. Ecosystem
    A community of living organisms living with the nonliving components of their environment.

    Eg. Grasslands, Tropical Rain Forests, and Deserts.
  2. Sustainable ecosystem
    A community that is able to last forever

    ·Wetlands and forest
  3. Biotic
    Biotic components are the living things that shape an ecosystem.

    ·Plants, Animals, Fungi, and any other living things
  4. Abiotic
    Non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems

    Water Depth, pH, Sunlight, Turbidity
  5. Lithosphere
    The outer solid part of the earth

    Volcanoes, Mountains, The ground, Glaciers, Ice caps
  6. Hydrosphere
    The liquid water component of the Earth

    Oceans, Seas, Lakes, Ponds, Rivers and streams
  7. Atmosphere
    The envelope of gases surrounding the earth
  8. Biosphere
    The global sum of all ecosystems

    Living organisms and their environment
  9. Nutrients
    Components in foods that an organism uses to survive and grow.


    carbohydrates, protein, fat, vitamins, minerals and water.
  10. Eutrophication
    • A process in which nutrient level in water ecosystem increases 
    • ·causes algae blooms
  11. Photosynthesis
    Process used by plants and other organisms to convert light energy

    uses energy from sun to turn water, carbon dioxide, and minerals into oxygen and organic compounds

    Carbon dioxide +water↦ glucose + oxygen
  12. Fermentation
    • the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms
    • glucose↦carbon dioxide + ethanol+2ATP
  13. Bioaccumulation
    the accumulation of substances, such as pesticides, or other chemicals in an organism

    Occurs when an organism absorbs a toxic substance at a rate greater than that at which the substance is lost.
  14. Tropic efficiency
    Describes the efficiency with which energy is transferred from one trophic level to the next

  15. Biomass
    a renewable and sustainable source of energy used to create electricity or other forms of power.

    scrap lumber
  16. Trophic Level
    The position an organism occupies in a food chain

  17. Greenhouse Gases
    any gaseous compound in the atmosphere that is capable of absorbing infrared radiation,

  18. Greenhouse Effect
    • the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be in the absence of its atmosphere
  19. Acid Precipitation
    a rain or any other form of precipitation that is unusually acidic.

    • possesses elevated levels of hydrogen ions
    • low pH
    • harmful effects on plants, aquatic animals and infrastructure

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