Do Now Activity What is the difference between an autotroph and a heterotroph? What is the difference between cellular respiration and photosynthesis?

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Presentation transcript:

Do Now Activity What is the difference between an autotroph and a heterotroph? What is the difference between cellular respiration and photosynthesis? What is the difference between a carnivore and an omnivore?

Essential Question: Section 7-2: energy flow How does energy move through the trophic levels and what happens to it when it is passed from one trophic level to the next? Learning Target Describe the movement of energy across trophic levels. Explain energy distribution when moving from one trophic level to the next. Section 7-2: energy flow

Check the class calendar! announcements Check the class calendar!

announcements Available Extra Credit: Tissue Box = 10 Points CP Starburst Original Jellybeans = 30 Points CP Stauffer’s Original Animal Crackers = 30 Points CP

Don’t forget to chunk your notes!

Food chains Food chains show energy moving from the ___ to the __________ to the __________ . sun producer consumer

Each step of a food chain is called a ____________ . Food chains Each step of a food chain is called a ____________ . trophic level

Don’t forget to chunk your notes!

A food web connects all the ____ ________ within an ecosystem together Food webs A food web connects all the ____ ________ within an ecosystem together food chains

Don’t forget to chunk your notes!

Trophic levels Only about ____ % of the Energy in one level is transferred to the next. 1% 10 10% 100% Energy Pyramid

Most of the energy consumed is used by the animal to keep it alive. Trophic levels Most of the energy consumed is used by the animal to keep it alive. 1% 10% 100% Energy Pyramid

What is left is released as _______ into the environment Trophic levels What is left is released as _______ into the environment 1% heat 10% 100% Energy Pyramid

According to the pyramid, what organism is in the third trophic level? The Biomass Pyramid According to the pyramid, what organism is in the third trophic level? Grass Grasshopper Frog Snake

The Biomass Pyramid According to the pyramid, how much energy will the last trophic level gain? 1,000 100 10 1

SUNLIGHT !!! Trophic levels Herbivores (Cows) Producers (grass) Omnivores or Carnivores (Humans) Herbivores (Cows) Producers (grass) Secondary Consumers Primary Consumers Producers - Energy 1% energy available 10% energy available 100% energy available - 10 % - Energy - 10 % - Energy SUNLIGHT !!!

Please complete the Food Web Worksheet Part A Do now activity Please complete the Food Web Worksheet Part A

Please complete the Food Web Worksheet Part B Do now activity Please complete the Food Web Worksheet Part B

Please complete the Food Web Worksheet Part C Do now activity Please complete the Food Web Worksheet Part C

Food web project due next Wednesday