1. Feb. 17 th WARM UP Write a simplified definition for the following: 1.Food chain 2.Energy pyramid 3.Secondary consumer 4.Trophic ANNOUNCEMENTS: See board

2. Learning Goal 4 – Explain the relationship between different organisms of an ecosystem and describe the importance of key species 3 – understand the basics of food webs and food chains 2 – know what a food chain is 1 – need to review this concept

3. Food Chain vs Food Web What is the difference? What are keystone species? What kinds of things can influence an ecosystem?

4. 1. Ecosystem a.Ecosystem: b.Biotic: c.Abiotic: Study Jams Ecosystem

5. Food Chains What was the food chain for our Hunger Games lab? What were some biotic & abiotic factors

6. Food Web

7. Food Chain & Pyramid

8. 2. Organisms in an Ecosystem a.Animals that only eat plants  herbivores b.Animals that only eat animals  carnivores c.Animals that eat plants & animals  omnivores d.Organisms that breakdown other organisms  decomposers

9. Trophic: Each level can also be called “trophic” Means: food or feeding in Greek: Τροφή

10. Food Web Activity Create a correct food web (at least 7 organisms) for the following biomes with your table – Rain forest – Desert – Grassland – Deciduous forest (ie: Appalatians) – Boreal forest (ie: Canada) – Tundra – Stream – Ocean

11. Energy Pyramids

12. Energy Flow

13. With a partner discuss: 1.If the food chain had continued to the next level, what percentage of energy would the next level consumer have received from the previous consumer? 2.How much water would you have transferred into the the next level consumer’s cup? 3.Judging from this activity, why do you think most food chains never go higher than 2 nd or 3 rd level consumers?

14. Fill in the blanks http://schoolworkhelper.net/wp-content/uploads/2011/01/EnergyPyramid-26a65z5.gif

15. 25 kcal 2500 kcal 2.5 kcal Fill in the Blanks 250 kcal B kcal C kcal http://www.proprofs.com/quiz-school/upload/yuiupload/244802756.jpg A kcal

16. Other Types of Pyramids Number PyramidBiomass Pyramid