NR 435 Chapter 2 Vocabulary

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  1. biomass
    The accumulated biological material produced by living organisms.
  2. carbon cycle
    The circulation and reutilization of carbon atoms, especially via the processes of photosynthesis and respiration.
  3. carnivores
    Organisms that mainly prey upon animals.
  4. cellular respiration
    The process in which a cell breaks down sugar or other organic compunds to release energy used for cellular work.
  5. community
    The population of plants, animals and microorganisms living and interaction in a certain area at a given time.
  6. consumers
    Organisms that obtain energy and nutrition by feeding on other organism or their remains.
  7. decomposers
    Fungus or bacterium that breaks complex organic material into smaller molecules.
  8. ecology
    The scientific study of relationships between organisms and their environment.
  9. ecosystem
    A specific biological community and it's physical environment interacting in an exchange of matter and energy.
  10. energy
    The capacity to do work, such as moving matter over a distance.
  11. food web
    A complex interlocking system of individual food chains in an ecosystem.
  12. herbivores
    Organisims that only eat plants.
  13. metabolism
    All the energy and matter exchanges that occur within a living cell or organism.
  14. nitrogen cycle
    The circulation and reutilization of nitrogen in both organic and inorganic phases.
  15. omnivores
    Organisms that eat both plants and animals (actually that feed on more than one trophic level).
  16. pH
    A value that indicates the acidity or alkalinity of a solution on a scale from 0 to 14, based on the proportion of H' ions present.
  17. photosynthesis
    The biomechanical process by which green plants and some bacteria capture light energy and use it to produce chemical bonds. Carbon dioxide is consumed while oxygen and simple sugars are produced
  18. population
    All members of a species that live in the same area at the same time.
  19. primary producers
    photosynthesizing organisms
  20. productivity
    The amount of biomass produced in a given area during a given period of time.
  21. trophic level
    Step in the movement of energy through an ecosystem; and organisms feeding status in an ecosystem.
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NR 435 Chapter 2 Vocabulary
basic enviro sci words
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