Environmental Biology (3)

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Anonymous
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235552
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Environmental Biology (3)
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2013-09-18 05:50:16
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Chapter 3
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  1. Disappearance Of Rain forests
    Half of the rain forests are destroyed by humans cutting down cutting down trees, growing crops, grazing cattle, and building settlements.
  2. Ecological Importance of Microbes
    Microbes are the many thousands of species of bacteria and fungi and floating phytoplankton. they break down the food we eat,  help purify water and they help keep us alive.
  3. 3 Factors Sustain Life on Earth
    • -The one way flow of high-quality energy
    • -Cycling of nutrients 
    • -Gravity
  4. 5 Main Greenhouse Gases
    Water Vapor, Carbon Dioxide, Methane, Nitrous Oxide and Ozone.
  5. Greenhouse effect work naturally
  6. Organism
    An individual living being
  7. Spieces
    Group of organisms that have a unique set of characteristics that distinguish them and can mate and produce fertile offspring
  8. Population
    Group of individuals of same species living in a particular place
  9. Community
    Populations of different species living in a particular place and potentially intreating with each other
  10. Ecosystem
    community of different species interacting with one another and their nonliving environment of matter and energy
  11. Biosphere
    part of the earth's air, water,and soil where life is found
  12. Photosynthesis 
    Chemosynthesis
    -Get energy from the sun 

    -Survives on geothermal energy from the earth's interior
  13. Producers (Autotrophs)
    Organisms that uses solar energy or chemical energy to manufacture the organic compounds it needs as nutrients from simple inorganic compounds obtained from its environment
  14. Consumers
    Feeds on the tissue of the producers or the consumers
  15. Primary Consumers
    animals that eat plants (herbivores; giraffes and caterpillars)
  16. Secondary Consumer
    Animals that eat meat (carnivores; lion and fish)
  17. Tertiary Consumer
    Feed on the flesh of other carnivores (ex; tigers and hawks)
  18. Omnivores
    Eat plants and other animals (ex Humans, Pigs and Rats)
  19. Scavengers
    Organisms that a feed on dead organisms that were killed by other organisms or died naturally (ex; Vultures)
  20. Detritus Feeders
    Feed on the wastes or dead bodies of other organisms (Detritivores)
  21. Decomposers
    Consumers in the process of obtaining their own nutrients, release nutrients form wastes or remains if plants and animals and then return these nutrients to the soil
  22. Detritus
    Debris; parts of dead organisms and castoff fragments and wastes of living organisms
  23. 4 Trophic Level
    • 1st Producers (plants)
    • 2nd primary Consumers (Herbivores)
    • 3rd Secondary Consumers (Carnivores)
    • 4th Tertiary Consumers (Top Carnivores)
  24. Trophic Level
    All organisms that are the same number of energy transfers away from (feeding level)
  25. Biomass
    The dry weight of all organic matter contained in its contained in it organisms that can be supported at each trophic level in a food chain or web
  26. Gross primary productivity
    The rate at which an ecosystems producers convert solar energy into chemical energy in the form of biomass found in their tissues
  27. Net Primary Productivity
    the rate at which producers use photosynthesis to produce and store chemical energy minus the rate at which they use some of this stored chemical energy through aerobic respiration
  28. Hydrological Cycle
    • -Biogeochemical cycle that collect, purifies and distributes the earth's fixed supply of water from the environment to living organisms and the n back to the environment
    • -Powered by energy from the sun and involves precipitation evaporation and transpiration.
  29. 3 Ways we influence the water cycle
    • -taking large quantities faster than the nature can replace it 
    • -clear vegetation to increases more runoff 
    • -urban development
  30. Carbon Cycle
    The flow of essential elements from the environment to living organisms and back to the environment.
  31. 2 Ways we Influence Carbon Cycle
    • Transportation 
    • cutting trees 
    • burning fossil fuels
  32. Important of Carbon
    The basic building block of carbohydrates, fats, proteins, DNA, and other organic compounds necessary for life

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