2. Food Chains Food Chain What do food chains show? What do the arrows represent? A series of events in which one organism eats another and obtains energy. Food chains show the transfer of energy in an ecosystem The arrows represent the transfer of energy.

3. What do food chains start with? What type of organism is after the sun? Describe photosynthesis. Almost all Food Chains start with the sun After the sun is an organism that can do photosynthesis. Like plants and phytoplankton. Sunlight + Carbon Dioxide + Water = Energy –This process is called Photosynthesis

6. Video Clip

7. Producers An organism that can make its own food, through a process called photosynthesis. Producers are the source of all food in an ecosystem. Without producers there is no food chain. Phytoplankton Flowers Tree

8. 1.What are two types of producers? 2.What is the importance of producers in an ecosystem? 3.What would happen to life on Earth without producers.? Pair/Share

9. Decomposers Organisms that break down wastes and dead organisms and return the raw materials to the environment. Two major groups of decomposers are: –Bacteria –Fungi. Decomposer Video Clip

10. bacteria fungus Donut Decomposition Rabbit decomposition time-lapse

11. 1.What are two types of decomposers? 2.What is the importance of decomposer in an ecosystem? 3.What would happen to life on Earth without decomposers? Pair/Share

12. Consumers 3 types of Consumers An organism that obtains energy by feeding on other organisms. Ex: Deer, Humans, Snakes, Bat, Cat, Hippopotamus, Cricket, Rabbit Herbivores, Omnivores and Carnivores

13. Sun Producer Primary Secondary Tertiary Consumer Consumer Consumer

15. Pair Share Partner A: Look to your partner and tell them the 3 types of energy levels? Partner B: Look at your partner and describe a producer and give an example. Partner A: Look at your partner and describe a consumer and give an example. Partner B: Look at your partner and describe a decomposer and give an example.

16. Sample food chains with energy roles labeled: Sun →milkweed → aphid →ladybug producer 1 consumer 2 consumer →bird → mushroom 3 consumer Decomposer Sun → grass → zebra → lion → vulture produce 1 consumer 2 consumer 3 con Sun → seeds → grasshopper→ mouse → producer 1 consumer 2 consumer hawk 3 consumer Video Clip 2 Video Clip 2 /Prod/Cons VideoProd/Cons Video

17. 3 types of consumers Carnivores Herbivores, Carnivores, and Omnivores Consumers that eat ONLY other consumers. ( Meat -Eaters) Ex: T-rex, Tigers, Lions, Ladybugs, Spiders.

18. Herbivores Herbivores are consumers that eat only producers. (plant eaters) Ex: Butterflies, deer, elephants, giraffes, rabbit.

19. Omnivores Consumers that eat BOTH consumers and producers. (both meat eaters and plant eaters) Ex. Humans, Bearded Dragons, Turtles, Bears.

20. Sample food chains with energy roles labeled: Sun →milkweed → aphid →ladybug producer 1 consumer 2 consumer herbivore Carnivore →bird → mushroom 3 consumer Decomposer Omnivore Sun → grass → zebra → lion → vulture produce 1 consumer 2 con 3 con herbivore carnivore carnivore

21. A pig eats fruit, eggs, corn, and earthworms. Omnivore

22. : A frog eats insects, earthworms, and spiders. Carnivore/ Insectivore

23. Rhinoceros: eats grass, leaves, twigs, and shrub Herbivore

24. A raccoon eats almost anything including berries, acorns, baby mice, baby birds & eggs, frogs, fish, and even some snakes. Omnivore

25. Spiders eat insects. Carnivore/ Insectivore

26. A giraffe lives in Africa and eats leaves from trees. A giraffe may eat 75 pounds of food each day. Herbivore

27. A wolf eats deer, dogs, fish, mice, moose, birds, and other herbivores. Carnivore

28. Rabbits eat grasses, weeds, leaves, shoots, twigs, and bark. Herbivore

29. Lions eat other animals such as gazelles, antelopes, and zebras. Carnivore

30. Sheep eat grass and hay. Herbivore

31. Eagles eat fish, mammals, birds, and snakes. They love fish! Carnivore

32. Cow eats grass and hay. Herbivore

33. Deer eat corn, twigs, shoots, acorns, fruit, berries, green plants. Herbivore

34. A grizzly bear usually eat things such as grasses, roots, berries, insects, fish, and small and large mammals. Omnivore

35. Humans Omnivore

36. Manatee eat 150 pounds of plants each day Herbivore

37. Scavenger Scavengers are animals that eat dead animals Scavengers open up animal bodies so they can eat them.

38. Pair Share Partner A: Look to your partner and tell them the 3 types of Consumers? Partner B: Look at your partner and describe a herbivore and give an example. Partner A: Look at your partner and describe a omnivore and give an example. Partner B: Look at your partner and describe a carnivore and give an example.

39. Food WebsA Food Web consists of many overlapping food chains in an ecosystem. It better represents the transfer of energy than a food chain.

42. Pair Share Partner A tell your partner what a food web is. Partner B explain the difference between a food web and a food chain.

43. Energy Pyramids Energy Pyramid

44. An Energy Pyramid shows the amount of energy that moves from one feeding level to another in a food web. The most energy is at the producer level. At each level there is less available energy. Energy Pyramid Video ClipEnergy Pyramid Video Clip

45. Law of Conservation The law of conservation of energy is a law of science that states that energy cannot be created nor destroyed. Energy can only be changed from one form to another or transferred from one object to another. So if each trophic level has less available energy, where does this energy go if it can not be destroyed?

50. 3 rd level consumers mostly carnivores & some omnivores 2 nd level consumer carnivores & omnivores 1 st level consumer herbivores Producers: green plants make their own energy from sunlight 10,000 Kcal 1000 Kcal 100 Kcal 10 Kcal 1 Kcal An energy pyramid from the Andrews

51. Pair Share Discuss with your partner what a energy pyramid is. Where does the energy go when it leaves the food chain?