Science - Unit 4 Ecology Chapter 1

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Science - Unit 4 Ecology Chapter 1
2014-05-24 19:03:09
science ecology grade9
science glossary terms ecology
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  1. Ecosystem
    All 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
  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. Nutrient
    a chemical that is essential to living things and is cycled through ecosystems
  10. Terrestrial ecosystem
    an ecosystem that is land based
  11. Aquatic ecosystem
    an ecosystem that is water based
  12. Eutrophication
    a process in which nutrient levels in aquatic ecosystems increase leading to an increase in the populations of primary producers
  13. Photosynthesis
    a process that changes solar energy into chemical energy
  14. Trophic level
    a category of organisms that is defined by how the organisms gain their energy
  15. Biomass
    the total mass of living organisms in a defined area or group
  16. Trophic efficiency
    a measure of the amount of energy or biomass transferred from one tropic level to the next higher trophic level
  17. Bioaccumulation
    a process in which materials especially toxins are ingested by an organism at a rate greater than they are eliminated
  18. Cellular respiration
    a process that releases energy from organic molecules, especially carbohydrates, in the presences of oxygen
  19. Fermentation
    a process that releases energy from organic molecules, especially carbohydrates in the absenceĀ  of oxygen
  20. Greenhouse gases
    atmospheric gases that prevent heat from leaving the atmosphere, thus increasing the temperature of the atmosphere
  21. greenhouse effect
    the warming of Earth as a result of greenhouse gases, which trap some of the energy that would otherwise leave Earth
  22. Acid population
    rain, snow or fog due to gases in the atmosphere that react with water to form acids