SCIENCE chapter 1

  1. Ecosystem
    Includes all of the interacting parts of a biological community and its environment

    E.g. forest, pond,  artic, sea, tundra, rain forest
  2. Sustainable ecosystem
    Ecosystem that is capable of withstanding pressure and supporting a variety of organisms.
  3. Biotic
    All living or recently living parts of the ecosystem. 

    E.g. plants,  animals,  microorganisms, fungi.
  4. Abiotic
    Non living parts of the ecosystem that organisms need to survive.

    E.g. water, air, light, chemical nutrients,  soil.
  5. Lithosphere
    The hard part of earth's surface 

    E.g. rock, soil.
  6. Hydrosphere
    Liquid part of earth's surface

    E.g saltwater,  oceans,  fresh water, lakes, rivers
  7. Atmosphere
    Layer of gasses above earth's surface 

    E.g air 
  8. Biosphere 
    Living part of earth's surface. Not separate from other spheres. 
  9. Nutrients
    Chemicals that are needed by living organisms to survive.
  10. Eutrophication
    A process in which nutrient levels in aquatic ecosystems increase, leading to a increase in the population of primary producers. 
  11. Photosynthesis
    Conversion of solar energy to chemical energy, to be used as "food"

    Carbon dioxide+water=glucose+oxygen
  12. Trophic level
    Catagories of organisms defined by how the organisms gain 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
    The increase in the concentration of a toxin as it moves from one trophic level to the next. 
  17. Cellular respiration
    Fossil fuels burning releases nitrogen oxide and sulfur dioxide

    These gasses combine with water in the atmosphere to form nitrate acid and sulfuric acid

    These acids lower the normal PH of precipitation and eventually descends as acid precipitation in the form of rain,  sleet, or snow
  18. Fermentation
    A process that releases energy from organic molecules,  especially carbohydrates,  in the absence of oxygen. 
  19. Greenhouse gases
    Include methane,  carbon dioxide,  and water vapor, which trap some of the energy from the sun that would otherwise escape.
  20. Greenhouse effect
    Greenhouse gases provide a natural insulating effect that results in the earth having a temperature that is capable of sustaining diverse life.
  21. Acid precipitation
    Fossil fuels burning releases nitrogen oxide and sulfur dioxide

    These gasses combine with water in the atmosphere to form nitra
Card Set
SCIENCE chapter 1
Glossary term list