Bellringer/5.1 Notes.

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Presentation transcript:

Bellringer/5.1 Notes

5.1 Energy Flow

I. How Organisms Obtain Energy Plants make their own food. Photosynthesis-process in which plants make their own food. Plants are also called Autotrophs Heterotroph- an organism that must feed on other organisms.

Types of heterotrophs: Carnivore-eats other animals Herbivore-only eats plants

Omnivore-eats both plants and animals Scavenger-eats dead animals

Decomposer-breaks down and absorbs energy from dead organisms.

Matter and Energy Flow Energy flows through organisms in an ecosystem. Energy flow is shown by a food chain Energy flows from autotrophs to the heterotrophs and finally to the decomposers Food chains have between 3 to 5 steps

Energy is lost during each step of the food chain. Each organism in a food chain represents a Trophic Level Several food chains connected together make up a Food Web. Food webs paint a more realistic picture of how energy flows through an ecosystem.

Food Web

Ecological Pyramid-another model used to show how energy flows through an ecosystem. E.P. get smaller as they get taller because there is less energy available for the next trophic level.

Classwork: Section 1 Review, Pg. 123 Questions 1 – 6 Answers Only Skip Lines Between Each Answer

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