Saturday, October 18, 2014

Conditions: Introduction



  1. The importance of temperature in determining the comfort level of human life.
  2. Altering conditions purposefully (manmade)
  3. Conditions for plants: agriculture (permaculture)
  4. It is no wonder that laymen and traditional wisdom in Egypt gives a very high value to a person based on his or her fertility.
  5. In plants: conditions: survival, growth, reproduction


Houseplants Course

  1. Optimum conditions for each plant.
  2. Plant course: myths: (list needs)
    1. Sun (too much is bad)
    2. Water (don't over-water, don't soak it in water nor drown it in water)
  3. Look for coursera course about plants.


  • Understanding the distribution and abundance of a species requires knowledge about:
    • its history
    • resources it requires
    • rates of birth, death and migration
    • interactions with their own and other species
    • effects of environmental conditions
  • Environmental condition: "an abiotic environmental factor that influences the functioning of living organisms."
    • temperature
    • relative humidity
    • pH
    • salinity
    • pollutant concentration
  • "Unlike resources, conditions are not consumed by organisms."
  • For practical reasons, we measure the performance of organisms based on:
    • activity of an enzyme
    • respiration rate of a tissue
    • growth rate of individuals
    • rate of reproduction
  • Conditions gradually affect an organism's ability to:
    • reproduce
    • grow
    • survive
  • Effects of environmental conditions:
    • Extreme conditions are lethal
      • temperature
      • pH
    • The condition is lethal only at high intensities
      • toxins
      • radioactive emissions
      • chemical pollutants
    • The condition is required at low concentrations
  • "Temperature is the single most important condition that affects the lives of organisms."


Why is temperature the most important conditions in the environment of an organism?