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Food Webs and Chains

Food Webs and Chains. Environmental Science Ms. Meltz. Beginning of Class Directions.

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Food Webs and Chains

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  1. Food Webs and Chains Environmental Science Ms. Meltz

  2. Beginning of Class Directions • Please have a seat and take some time to look over the notes worksheet. Look at the diagrams, and take a close look at the vocabulary words. If you can use prior knowledge to place any of the vocabulary words on the pyramid diagram, feel free to do so. • During the video, listen for any of the vocabulary wordslisted on your page, and pay close attention to any diagramsexplained in the video. • . http://videos.howstuffworks.com/hsw/10359-organisms-and-environment-the-energy-flow-video.htm

  3. What’s the Difference?

  4. Food Chain vs. Food Web • Food Chain = Flow of energy through trophic levels. • Trophic Level = Position on a food chain based on how an organism gets energy. • Food Web = Complex interactions between predators and prey represented by arrows. Shows several intertwined food chains.

  5. All organisms have a role in their environment, also know as their Niche. • Producers • Consumers • Carnivore • Scavenger • Predator • Herbivore • Omnivore • Parasite

  6. Producers • Organisms that produce their own food (autotrophs)

  7. Consumers • Organisms that cannot make their own food (heterotrophs)

  8. Herbivore • A plant eating organism

  9. Carnivore • A flesh eating organism • Predators- hunt and kill prey for food • Scavengers- eat dead animals

  10. Omnivore • An organism that eats both plants and animals

  11. Decomposer • Organisms that use dead organisms as food and return elements to the earth.

  12. Parasite • Lives off of another organism (its host)

  13. Organisms For Food Web: Sea Urchins, Kelp, Otters, Seals, Killer Whale, Fish • Kelp Forest Video • Free Willy • Killer Whale Video • Killer Whale/ Blue Whale

  14. End of Class Activity • Put your name at the top of your sticky note. • On your sticky note… • Draw a food chain pyramid, explaining each level to the best of your ability. Please give an example of an organisms in each level. • Also, what can you tell me about the transfer of energy between each trophic level? • When the bell rings, hand in your paperwork and place your sticky note on the door as you leave the room. • Have a nice day!!!

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