BIOLOGY CHAP 28

Card Set Information

Author:
ndumas2
ID:
161181
Filename:
BIOLOGY CHAP 28
Updated:
2012-07-05 23:02:05
Tags:
BIOLOGY
Folders:

Description:
Terms frm chap 28
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user ndumas2 on FreezingBlue Flashcards. What would you like to do?


  1. the deposition of nitric or sulfuric acid, either in rain (acid rain) or in the form of dry particles, as a result of the production of nitrogen oxides or sulfur dioxide through burning, primarily of fossil fuels.
    acid deposition
  2. an underground deposit of fresh water, often used as a source for irrigation.
    aquifer
  3. literally, "self-feeder"; normally, a photosynthetic organism; a producer.
    autotroph
  4. able to be broken down into harmless substances by decomposers.
    biodegradable
  5. the pathways of a specific nutrient (such as carbon, nitrogen, phosphorus, or water) through the living and nonliving portions of an ecosystem; also called a nutrient cycle.
    biogeochemical cycle
  6. the increasing accumulation of a toxic substance in progressively higher trophic levels.
    biological magnification
  7. the total weight of all living material within a defined area.
    biomass
  8. the steps by which carbon moves from its reservoirs in the atmosphere and oceans through producers and into higher trophic levels, and then back to its reservoirs.
    carbon cycle
  9. literally, "meat eater"; a predatory organism that feeds on herbivores or on other carnivores; a secondary (or higher) consumer.
    carnivore
  10. an organism that eats other organisms; a heterotroph.
    consumer
  11. an organism, usually a fungus or bacterium, that digests organic material by secreting digestive enzymes into the environment, in the process liberating nutrients into the environment.
    decomposer
  12. the excessive cutting of forests. In recent years, deforestation has occurred primarily in rain forests in the Tropics, to clear space for agriculture.
    deforestation
  13. the excessive cutting of forests. In recent years, deforestation has occurred primarily in rain forests in the Tropics, to clear space for agriculture.
    deforestation
  14. bacteria that break down nitrates, releasing nitrogen gas to the atmosphere.
    denitrifying bacteria
  15. one of a diverse group of organisms, ranging from worms to vultures, that live off the wastes and dead remains of other organisms.
    detritus feeder
  16. a graphical representation of the energy contained in succeeding trophic levels, with maximum energy at the base (primary producers) and steadily diminishing amounts at higher levels.
    energy pyramid
  17. a wetland formed where a river meets the ocean; the salinity is quite variable, but lower than that of sea water and higher than that of fresh water.
    estuary
  18. a linear feeding relationship in a community, using a single representative from each of the trophic levels.
    food chain
  19. a representation of the complex feeding relationships (in terms of interacting food chains) within a community, including many organisms at various trophic levels, with many of the consumers occupying more than one level simultaneously.
    food web
  20. a fuel such as coal, oil, and natural gas, derived from the remains of ancient organisms.
    fossil fuel
  21. a gradual rise in global atmospheric temperature as a result of an amplification of the natural greenhouse effect due to human activities.
    global warming
  22. the process in which certain gases such as carbon dioxide and methane trap sunlight energy in a planet's atmosphere as heat; the glass in a greenhouse does the same. The result, global warming, is being enhanced by the production of these gases by humans.
    greenhouse effect
  23. a gas, such as carbon dioxide or methane, that traps sunlight energy in a planet's atmosphere as heat; a gas that participates in the greenhouse effect.
    greenhouse gas
  24. literally, "plant-eater"; an organism that feeds directly and exclusively on producers; a primary consumer.
    herbivore
  25. literally, "other-feeder"; an organism that eats other organisms; a consumer.
    heterotroph
  26. the pathway that water takes as it travels from its major reservoir, the oceans, through the atmosphere to reservoirs in freshwater lakes, rivers, and groundwater, and back into the oceans. The hydrologic cycle is driven by solar energy. Nearly all water remains as water throughout the cycle (rather than being used in the synthesis of new molecules).
    hydrologic cycl
  27. a member of a family of plants characterized by root swellings in which nitrogen-fixing bacteria are housed; includes peas, soybeans, lupines, alfalfa, and clover.
    legume
  28. a nutrient required by an organism in relatively large quantities.
    macronutrient
  29. a nutrient required by an organism in relatively small quantities.
    micronutrient
  30. the energy stored in the autotrophs of an ecosystem over a given time period that is available to other members of the community.
    net primary production
  31. the process by which nitrogen moves from its primary reservoir of nitrogen gas in the atmosphere via nitrogen-fixing bacteria to reservoirs in soil and water, through producers and into higher trophic levels, and then back to its reservoirs.
    nitrogen cycle
  32. the process that combines atmospheric nitrogen with hydrogen to form ammonium
    nitrogen fixation
  33. a substance acquired from the environment and needed for the survival, growth, and development of an organism.
    nutrient
  34. the pathways of a specific nutrient (such as carbon, nitrogen, phosphorus, or water) through the living and nonliving portions of an ecosystem; also called a biogeochemical cycle.
    nutrient cycle
  35. an organism that consumes both plants and other animals.
    omnivore
  36. the process by which phosphorus moves from its primary reservoir—phosphate-rich rock—to reservoirs of phosphate in soil and water, through producers and into higher trophic levels, and then back to its reservoirs.
    phosphorus cycle
  37. photosynthetic protists that are abundant in marine and freshwater environments.
    phytoplankton
  38. an organism that feeds on producers; an herbivore.
    primary consumer
  39. a photosynthetic organism; an autotroph.
    producer
  40. the major source and storage site of a nutrient in an ecosystem, normally in the abiotic portion.
    reservoir
  41. an organism that feeds on primary consumers; a carnivore.
    secondary consumer
  42. a carnivore that feeds on other carnivores (secondary consumers).
    tertiary consumer
  43. the evaporation of water through stomata, chiefly in leaves.
    transpiration
  44. literally, "feeding level"; the categories of organisms in a community, and the position of an organism in a food chain, defined by the organism's source of energy; includes producers, primary consumers, secondary consumers, and so on.
    trophic level
  45. nonphotosynthetic protists that are abundant in marine and freshwater environments.
    zooplankton

What would you like to do?

Home > Flashcards > Print Preview