Friday, October 12, 2007

"Trophic Levels 2"

Bellwork:
1) The amount of biomass produced increases/decreases from the producer to the primary consumer trophic levels.
For answer: Choose one (increase or decrease)
2) 1 kg of owl needs to eat ____ kg of mice to survive.
Hint: Think of the 10% Rule.
3) Add “Biomass: The amount of living stuff” to the glossary (page 33 or 35)

- Review "10% Rule" ==> only 10% of consumed energy gets passed from one trophic level to the next because organisms use up 90% of consumed energy to survive.
- Activity: Use beads to create a physical representation of a Mono Lake food pyramid
- Discuss: food webs and energy flow and the decrease of biomass in an ascending food pyramid
-Closure: Answer this on the back of the bellwork sheet. Title it “closure” with “10/12/07”
Q1: How does your body get the energy to do what you want to do?
Q2: Is this any different than what your originally thought?