1. Warm up Why are cycles important in an ecosystem? How do cycles show the laws of Conservation?

2. Cycles in an Ecosystem

3. Cycles are important to the health of the planet. Many materials cycle throughout ecosystems. They follow the Laws of Conservation…

4. The W A T E R Cycle Condensation Precipitation Transpiration Evaporation Runoff Ground water

5. Hmm??? Why do farmers spray crops with cold water when the weather is expected to dip below freezing?

6. Hmm??? How does an oasis form in a desert that receives very little rain?

7. Oh My!!!!!!!!!!!!!! The average person in the United States uses about 78 gallons of water each day! What are some things we could do to reduce this number?

8. READ… Please read “Pass the Salt, Please” and answer the critical thinking questions in your notebook.

9. The C A R B O N Cycle CO2 in the air Photosynthesis Respiration Combustion Death & Decomposition Fossil Fuels Fossil Fuels

10. Hmm??? What is collecting on the jar? Why?

11. Hmm??? Carbon dioxide causes the Earth’s atmosphere to hold in heat. What problem is this creating for the planet?

12. The N IT R O GE N Cycle Nitrogen in air Animals get N from plants Fixed by lightning Uptake by plants Dead things Bacteria in the soil change it to gas Released by decomposers Fixed by lightning

13. NOW… Create a concept map or word web that describes the 3 cycles important to all ecosystems.