TEKS 5.9B: Describe how the flow of energy

TEKS 5.9B: Describe how the flow of energy

TEKS 5.9B: Describe how the flow of energy derived from the Sun, used by producers to create their own food, is transferred through a food chain and food web to consumers and decomposers. How do organisms obtain energy? Sunlight is the main energy source for life on Earth. An organisms energy role in an ecosystem is determined by how it obtains energy. (contd.) TEKS 5.9B: Describe how the flow of energy derived from the Sun, used by producers to create their own food, is transferred through a food chain and food web to consumers and decomposers. Producers are plants that use the suns energy in making food. Consumers eat plants or other animals. Consumers include

herbivores, carnivores, and scavengers. 1.1.Identify IdentifyWhich Whichgroup groupofoforganisms organismsininan an ecosystem ecosystemprovides providesenergy energyfor forall allthe theothers? others? (contd.) TEKS 5.9B: Describe how the flow of energy derived from the Sun, used by producers to create their own food, is transferred through a food chain and food web to consumers and decomposers.

Decomposers digest the waste and remains of dead plants and animals. TEKS 5.9B: Describe how the flow of energy derived from the Sun, used by producers to create their own food, is transferred through a food chain and food web to consumers and decomposers. What are food chains and food webs? The movement of energy through ecosystems is shown in diagrams called food chains and food webs. In a food chain, organisms transfer energy by eating and being eaten. (contd.) TEKS 5.9B: Describe how the flow of energy derived from the Sun, used by producers to create their own food, is transferred through a food chain and food web to consumers and decomposers.

A food chain always begins with energy from sunlight to producers. Energy flows through a food chain in one direction. 2.2.Describe DescribeDescribe Describethe theflow flowofof energy energyininthe thefood foodchain chainshown showntotothe the left. left.

(contd.) TEKS 5.9B: Describe how the flow of energy derived from the Sun, used by producers to create their own food, is transferred through a food chain and food web to consumers and decomposers. A system of overlapping food chains is called a food web. In a food web, the flow of energy branches out in many directions. 3.3.Interpret InterpretVisuals VisualsHow How could

you draw arrows could you draw arrowstoto show showhow howthe thedecomposers decomposers are arerelated relatedtotothe theother other organisms in the food organisms in the foodweb? web? TEKS 5.9B: Describe how the flow of energy derived from the Sun, used by producers to create their

own food, is transferred through a food chain and food web to consumers and decomposers. What is an energy pyramid? An energy pyramid shows how energy moves through an ecosystem. The base of the energy pyramid is wider because more food energy is available. Only stored energy can pass along the food chain. Less energy flows upward from the lower levels to the higher ones. 4.4.Infer InferWhy Whydoes doesthe thenumber numberofofanimals animalsdecrease decreasethe

thehigher higherthey theyare areon onthe the food foodpyramid? pyramid? (contd.) TEKS 5.9B: Describe how the flow of energy derived from the Sun, used by producers to create their own food, is transferred through a food chain and food web to consumers and decomposers.

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