1. Objective: How does energy flow different from matter flow in an ecosystem ?

2.  Take the page and divide it into 6 equal boxes  Number the boxes Notes: Cycles of Matter12 34 56

3. ▪Energy flows in one direction ▪Gets used up!!! ▪10% transfers between trophic level ▪90% lost as heat

4. ▪ Biogeochemical cycles = movement of a particular chemical through the ecosystem ▪Matter not used up, just transformed!!

5. ▪All living thins need water to survive ▪Moves by the processes of evaporation, transpiration, condensation and precipitation.

6. ▪Carbon is key ingredient for living tissue ▪Photosynthesis uses up carbon ▪ Cellular respiration (process to make energy) adds carbon

7. ▪Nitrogen needed to make proteins ▪N 2 gas most abundant in atmosphere ▪Nitrogen fixation = bacteria change N 2 gas into ammonia, which plants can use

8. Instructions: - Write a 2-3 sentence summary answer today’s focus question - Number and highlight each period How is energy flow through an ecosystem different from how matter flows through the ecosystem?