Biology 111: Lecture 10Fall 1997

Human Impact II

  1. Nutrient/chemical flow through ecosystems is CYCLIC
    1. Molecules of life
    2. Biogeochemical cycles
      1. Hydrologic (water) cycle
      2. Carbon cycle
      3. Nitrogen cycle
      4. Phosphorous cycle

  2. To cut down trees or not to cut down trees...that is the question
    1. Reasons for
    2. Reasons against


"You'll never find peace of mind in your pool of self.
You'll never find peace of mind in a sea of wealth.
You'll never find peace of mind in your rock and roll.
You'll never find peace of mind if you sell your soul.

You gotta like it, you gotta love it
I know you need some freedom from the strife.
You gotta like it, you gotta love it
I know you need some Jesus in your life."

 dc Talk, Like It, Love It, Need It