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Chapter 15,16 - Ecology


Definitions:

certain area.

interacting with each other and with the physical environment.


  1. The nature of Ecosystems
    1. Habitat vs. Niche
    1. Abiotic components of an ecosystem
    1. Biotic components of an ecosystem
    1. Producers


Sunlight


    1. Consumers
    1. Herbivore
    1. Carnivores
    1. Omivores
    1. Decomposers
    1. Energy flow and Chemical Cycling



 


 

 

Abiotic Components

Biotic Components


Nutrients


Energy

Heat

 

  1. Energy Flow in an Ecosystem





 

 

  1. Chemical Cycling in an Ecosystem
    1. Water cycle

    1. Freshwater vaporizes into the atmosphere
    2. Freshwater falls as rain
    3. Eventually returned to the ocean

    4. Freshwater distilled from sea water
    1. Phosphorus, Nitrogen & Carbon Cycles

3 parts:

    1. Reservoir => Storehouse for an inorganic element.
    2. Exchange Pool => Where producers get nutrients.
    3. Biotic Community => Chemicals move along food chains to and from the exchange pool.





    1. Phosphorus Cycle
    1. Nitrogen Cycle
    1. Carbon Cycle
  1. Human-Impacted Ecosystems
    1. Country
    1. Planting of a few genetic varieties
    2. Heavy use of fertilizers, pesticides and herbicides.
    3. Generous irrigation
    4. Excessive fuel consumption
    5. Loss of land quality
    1. City
    1. Dependent on the country to meet its needs
    2. Heavy use of fossil fuels
    3. Little recycling
    4. Air and Water Pollution
    1. The Problem
    1. Fuel combustion by-products
    2. Sewage
    3. Fertilizers
    4. Pesticides
    5. Solid Wastes
    6. Acid Rain
    7. Global Warming
    8. Population Explosion
    1. The Solution
    1. Conserve Energy & Raw Materials
    2. Awareness